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Finding the Fourth Proportional to 157,393.92, 217,202.89 and 85,773.92

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Solution

The fourth proportional to 157,393.92, 217,202.89 and 85,773.92 is: 118,367.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,393.92 : 217,202.89 = 85,773.92 : x
  2. Step 2: Convert to fraction form
    157,393.92/217,202.89 = 85,773.92/x
  3. Step 3: Cross multiply
    157,393.92x = 217,202.89 × 85,773.92
  4. Step 4: Simplify right side
    157,393.92x = 18,630,343,639.20
  5. Step 5: Solve for x
    x = 18,630,343,639.20/157,393.92
  6. Step 6: Final answer
    x = 118,367.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.