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Finding the Fourth Proportional to 157,571.55, 217,731.92 and 119,780.19

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Solution

The fourth proportional to 157,571.55, 217,731.92 and 119,780.19 is: 165,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,571.55 : 217,731.92 = 119,780.19 : x
  2. Step 2: Convert to fraction form
    157,571.55/217,731.92 = 119,780.19/x
  3. Step 3: Cross multiply
    157,571.55x = 217,731.92 × 119,780.19
  4. Step 4: Simplify right side
    157,571.55x = 26,079,970,147.76
  5. Step 5: Solve for x
    x = 26,079,970,147.76/157,571.55
  6. Step 6: Final answer
    x = 165,511.92

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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.