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Finding the Fourth Proportional to 100,249.48, 138,337.86 and 54,926.92

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Solution

The fourth proportional to 100,249.48, 138,337.86 and 54,926.92 is: 75,795.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,249.48 : 138,337.86 = 54,926.92 : x
  2. Step 2: Convert to fraction form
    100,249.48/138,337.86 = 54,926.92/x
  3. Step 3: Cross multiply
    100,249.48x = 138,337.86 × 54,926.92
  4. Step 4: Simplify right side
    100,249.48x = 7,598,472,569.19
  5. Step 5: Solve for x
    x = 7,598,472,569.19/100,249.48
  6. Step 6: Final answer
    x = 75,795.63

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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.