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Finding the Fourth Proportional to 62,470.16, 86,209.52 and 33,790.40

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Solution

The fourth proportional to 62,470.16, 86,209.52 and 33,790.40 is: 46,631.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,470.16 : 86,209.52 = 33,790.40 : x
  2. Step 2: Convert to fraction form
    62,470.16/86,209.52 = 33,790.40/x
  3. Step 3: Cross multiply
    62,470.16x = 86,209.52 × 33,790.40
  4. Step 4: Simplify right side
    62,470.16x = 2,913,053,564.61
  5. Step 5: Solve for x
    x = 2,913,053,564.61/62,470.16
  6. Step 6: Final answer
    x = 46,631.12

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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.