Home / 28,088,712.80-42,133,069.20-19,578,658.40

Finding the Fourth Proportional to 28,088,712.80, 42,133,069.20 and 19,578,658.40

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Solution

The fourth proportional to 28,088,712.80, 42,133,069.20 and 19,578,658.40 is: 29,367,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088,712.80 : 42,133,069.20 = 19,578,658.40 : x
  2. Step 2: Convert to fraction form
    28,088,712.80/42,133,069.20 = 19,578,658.40/x
  3. Step 3: Cross multiply
    28,088,712.80x = 42,133,069.20 × 19,578,658.40
  4. Step 4: Simplify right side
    28,088,712.80x = 824,908,969,210,361.25
  5. Step 5: Solve for x
    x = 824,908,969,210,361.25/28,088,712.80
  6. Step 6: Final answer
    x = 29,367,987.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.