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Finding the Fourth Proportional to 157,352.92, 217,149.51 and 85,732.93

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Solution

The fourth proportional to 157,352.92, 217,149.51 and 85,732.93 is: 118,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,352.92 : 217,149.51 = 85,732.93 : x
  2. Step 2: Convert to fraction form
    157,352.92/217,149.51 = 85,732.93/x
  3. Step 3: Cross multiply
    157,352.92x = 217,149.51 × 85,732.93
  4. Step 4: Simplify right side
    157,352.92x = 18,616,863,740.36
  5. Step 5: Solve for x
    x = 18,616,863,740.36/157,352.92
  6. Step 6: Final answer
    x = 118,312.79

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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.