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Finding the Fourth Proportional to 109,491.92, 151,099.08 and 59,191.12

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Solution

The fourth proportional to 109,491.92, 151,099.08 and 59,191.12 is: 81,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,491.92 : 151,099.08 = 59,191.12 : x
  2. Step 2: Convert to fraction form
    109,491.92/151,099.08 = 59,191.12/x
  3. Step 3: Cross multiply
    109,491.92x = 151,099.08 × 59,191.12
  4. Step 4: Simplify right side
    109,491.92x = 8,943,723,776.17
  5. Step 5: Solve for x
    x = 8,943,723,776.17/109,491.92
  6. Step 6: Final answer
    x = 81,683.87

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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.