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Finding the Fourth Proportional to 107,915.64, 161,876.64 and 29,029.92

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Solution

The fourth proportional to 107,915.64, 161,876.64 and 29,029.92 is: 43,545.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,915.64 : 161,876.64 = 29,029.92 : x
  2. Step 2: Convert to fraction form
    107,915.64/161,876.64 = 29,029.92/x
  3. Step 3: Cross multiply
    107,915.64x = 161,876.64 × 29,029.92
  4. Step 4: Simplify right side
    107,915.64x = 4,699,265,909.07
  5. Step 5: Solve for x
    x = 4,699,265,909.07/107,915.64
  6. Step 6: Final answer
    x = 43,545.74

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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.