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Finding the Fourth Proportional to 91,248.86, 125,853.45 and 54,912.44

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Solution

The fourth proportional to 91,248.86, 125,853.45 and 54,912.44 is: 75,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248.86 : 125,853.45 = 54,912.44 : x
  2. Step 2: Convert to fraction form
    91,248.86/125,853.45 = 54,912.44/x
  3. Step 3: Cross multiply
    91,248.86x = 125,853.45 × 54,912.44
  4. Step 4: Simplify right side
    91,248.86x = 6,910,920,021.92
  5. Step 5: Solve for x
    x = 6,910,920,021.92/91,248.86
  6. Step 6: Final answer
    x = 75,737.06

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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.