Home / 18,858,528,048.55-28,287,792,072.83-7,813,373,232.55

Finding the Fourth Proportional to 18,858,528,048.55, 28,287,792,072.83 and 7,813,373,232.55

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Solution

The fourth proportional to 18,858,528,048.55, 28,287,792,072.83 and 7,813,373,232.55 is: 11,720,059,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,528,048.55 : 28,287,792,072.83 = 7,813,373,232.55 : x
  2. Step 2: Convert to fraction form
    18,858,528,048.55/28,287,792,072.83 = 7,813,373,232.55/x
  3. Step 3: Cross multiply
    18,858,528,048.55x = 28,287,792,072.83 × 7,813,373,232.55
  4. Step 4: Simplify right side
    18,858,528,048.55x = 221,023,077,389,790,019,584
  5. Step 5: Solve for x
    x = 221,023,077,389,790,019,584/18,858,528,048.55
  6. Step 6: Final answer
    x = 11,720,059,848.83

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Double scale
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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.