Home / 28,240,027,574.32-38,975,474,912.79-21,454,680,510.69

Finding the Fourth Proportional to 28,240,027,574.32, 38,975,474,912.79 and 21,454,680,510.69

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Solution

The fourth proportional to 28,240,027,574.32, 38,975,474,912.79 and 21,454,680,510.69 is: 29,610,677,957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240,027,574.32 : 38,975,474,912.79 = 21,454,680,510.69 : x
  2. Step 2: Convert to fraction form
    28,240,027,574.32/38,975,474,912.79 = 21,454,680,510.69/x
  3. Step 3: Cross multiply
    28,240,027,574.32x = 38,975,474,912.79 × 21,454,680,510.69
  4. Step 4: Simplify right side
    28,240,027,574.32x = 836,206,362,006,322,544,640
  5. Step 5: Solve for x
    x = 836,206,362,006,322,544,640/28,240,027,574.32
  6. Step 6: Final answer
    x = 29,610,677,957.22

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Double scale
Find fourth proportional to 28,240,027,575.32, 38,975,474,914.17 and 21,454,680,511.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.