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Finding the Fourth Proportional to 157,610.60, 217,502.33 and 85,990.67

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Solution

The fourth proportional to 157,610.60, 217,502.33 and 85,990.67 is: 118,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,610.60 : 217,502.33 = 85,990.67 : x
  2. Step 2: Convert to fraction form
    157,610.60/217,502.33 = 85,990.67/x
  3. Step 3: Cross multiply
    157,610.60x = 217,502.33 × 85,990.67
  4. Step 4: Simplify right side
    157,610.60x = 18,703,169,565.80
  5. Step 5: Solve for x
    x = 18,703,169,565.80/157,610.60
  6. Step 6: Final answer
    x = 118,666.96

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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.