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Finding the Fourth Proportional to 102,790.77, 141,894.99 and 62,517.47

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Solution

The fourth proportional to 102,790.77, 141,894.99 and 62,517.47 is: 86,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,790.77 : 141,894.99 = 62,517.47 : x
  2. Step 2: Convert to fraction form
    102,790.77/141,894.99 = 62,517.47/x
  3. Step 3: Cross multiply
    102,790.77x = 141,894.99 × 62,517.47
  4. Step 4: Simplify right side
    102,790.77x = 8,870,915,869.16
  5. Step 5: Solve for x
    x = 8,870,915,869.16/102,790.77
  6. Step 6: Final answer
    x = 86,300.70

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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.