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Finding the Fourth Proportional to 62,531.87, 86,120.69 and 54,031.25

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Solution

The fourth proportional to 62,531.87, 86,120.69 and 54,031.25 is: 74,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,531.87 : 86,120.69 = 54,031.25 : x
  2. Step 2: Convert to fraction form
    62,531.87/86,120.69 = 54,031.25/x
  3. Step 3: Cross multiply
    62,531.87x = 86,120.69 × 54,031.25
  4. Step 4: Simplify right side
    62,531.87x = 4,653,208,476.71
  5. Step 5: Solve for x
    x = 4,653,208,476.71/62,531.87
  6. Step 6: Final answer
    x = 74,413.40

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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.