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Finding the Fourth Proportional to 157,571.57, 217,450.15 and 85,951.91

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Solution

The fourth proportional to 157,571.57, 217,450.15 and 85,951.91 is: 118,614.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,571.57 : 217,450.15 = 85,951.91 : x
  2. Step 2: Convert to fraction form
    157,571.57/217,450.15 = 85,951.91/x
  3. Step 3: Cross multiply
    157,571.57x = 217,450.15 × 85,951.91
  4. Step 4: Simplify right side
    157,571.57x = 18,690,254,420.16
  5. Step 5: Solve for x
    x = 18,690,254,420.16/157,571.57
  6. Step 6: Final answer
    x = 118,614.39

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1.5x scale

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.