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Finding the Fourth Proportional to 63,989.52, 96,005.88 and 40,314.84

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Solution

The fourth proportional to 63,989.52, 96,005.88 and 40,314.84 is: 60,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,989.52 : 96,005.88 = 40,314.84 : x
  2. Step 2: Convert to fraction form
    63,989.52/96,005.88 = 40,314.84/x
  3. Step 3: Cross multiply
    63,989.52x = 96,005.88 × 40,314.84
  4. Step 4: Simplify right side
    63,989.52x = 3,870,461,691.26
  5. Step 5: Solve for x
    x = 3,870,461,691.26/63,989.52
  6. Step 6: Final answer
    x = 60,485.87

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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.