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Finding the Fourth Proportional to 60,763.92, 91,089.60 and 31,116.48

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Solution

The fourth proportional to 60,763.92, 91,089.60 and 31,116.48 is: 46,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,763.92 : 91,089.60 = 31,116.48 : x
  2. Step 2: Convert to fraction form
    60,763.92/91,089.60 = 31,116.48/x
  3. Step 3: Cross multiply
    60,763.92x = 91,089.60 × 31,116.48
  4. Step 4: Simplify right side
    60,763.92x = 2,834,387,716.61
  5. Step 5: Solve for x
    x = 2,834,387,716.61/60,763.92
  6. Step 6: Final answer
    x = 46,645.90

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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.