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Finding the Fourth Proportional to 157,136.68, 216,849.18 and 85,517.56

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Solution

The fourth proportional to 157,136.68, 216,849.18 and 85,517.56 is: 118,014.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,136.68 : 216,849.18 = 85,517.56 : x
  2. Step 2: Convert to fraction form
    157,136.68/216,849.18 = 85,517.56/x
  3. Step 3: Cross multiply
    157,136.68x = 216,849.18 × 85,517.56
  4. Step 4: Simplify right side
    157,136.68x = 18,544,412,761.60
  5. Step 5: Solve for x
    x = 18,544,412,761.60/157,136.68
  6. Step 6: Final answer
    x = 118,014.54

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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.