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Finding the Fourth Proportional to 59,781.92, 89,686.71 and 20,339.03

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Solution

The fourth proportional to 59,781.92, 89,686.71 and 20,339.03 is: 30,513.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,781.92 : 89,686.71 = 20,339.03 : x
  2. Step 2: Convert to fraction form
    59,781.92/89,686.71 = 20,339.03/x
  3. Step 3: Cross multiply
    59,781.92x = 89,686.71 × 20,339.03
  4. Step 4: Simplify right side
    59,781.92x = 1,824,140,909.51
  5. Step 5: Solve for x
    x = 1,824,140,909.51/59,781.92
  6. Step 6: Final answer
    x = 30,513.26

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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.