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Finding the Fourth Proportional to 62,218,976.80, 86,905,013.60 and 62,218,976.80

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Solution

The fourth proportional to 62,218,976.80, 86,905,013.60 and 62,218,976.80 is: 86,905,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,218,976.80 : 86,905,013.60 = 62,218,976.80 : x
  2. Step 2: Convert to fraction form
    62,218,976.80/86,905,013.60 = 62,218,976.80/x
  3. Step 3: Cross multiply
    62,218,976.80x = 86,905,013.60 × 62,218,976.80
  4. Step 4: Simplify right side
    62,218,976.80x = 5,407,141,024,982,084
  5. Step 5: Solve for x
    x = 5,407,141,024,982,084/62,218,976.80
  6. Step 6: Final answer
    x = 86,905,013.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.