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Finding the Fourth Proportional to 66,829.92, 92,213.56 and 38,136.48

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Solution

The fourth proportional to 66,829.92, 92,213.56 and 38,136.48 is: 52,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,829.92 : 92,213.56 = 38,136.48 : x
  2. Step 2: Convert to fraction form
    66,829.92/92,213.56 = 38,136.48/x
  3. Step 3: Cross multiply
    66,829.92x = 92,213.56 × 38,136.48
  4. Step 4: Simplify right side
    66,829.92x = 3,516,700,586.67
  5. Step 5: Solve for x
    x = 3,516,700,586.67/66,829.92
  6. Step 6: Final answer
    x = 52,621.65

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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.