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Finding the Fourth Proportional to 75,039.56, 103,472.16 and 48,171.92

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Solution

The fourth proportional to 75,039.56, 103,472.16 and 48,171.92 is: 66,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,039.56 : 103,472.16 = 48,171.92 : x
  2. Step 2: Convert to fraction form
    75,039.56/103,472.16 = 48,171.92/x
  3. Step 3: Cross multiply
    75,039.56x = 103,472.16 × 48,171.92
  4. Step 4: Simplify right side
    75,039.56x = 4,984,452,613.75
  5. Step 5: Solve for x
    x = 4,984,452,613.75/75,039.56
  6. Step 6: Final answer
    x = 66,424.33

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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.