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Finding the Fourth Proportional to 64,451.72, 96,639.58 and 29,372.20

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Solution

The fourth proportional to 64,451.72, 96,639.58 and 29,372.20 is: 44,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,451.72 : 96,639.58 = 29,372.20 : x
  2. Step 2: Convert to fraction form
    64,451.72/96,639.58 = 29,372.20/x
  3. Step 3: Cross multiply
    64,451.72x = 96,639.58 × 29,372.20
  4. Step 4: Simplify right side
    64,451.72x = 2,838,517,071.68
  5. Step 5: Solve for x
    x = 2,838,517,071.68/64,451.72
  6. Step 6: Final answer
    x = 44,040.98

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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.