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Finding the Fourth Proportional to 90,876.61, 125,414.54 and 50,593.89

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Solution

The fourth proportional to 90,876.61, 125,414.54 and 50,593.89 is: 69,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.61 : 125,414.54 = 50,593.89 : x
  2. Step 2: Convert to fraction form
    90,876.61/125,414.54 = 50,593.89/x
  3. Step 3: Cross multiply
    90,876.61x = 125,414.54 × 50,593.89
  4. Step 4: Simplify right side
    90,876.61x = 6,345,209,441.16
  5. Step 5: Solve for x
    x = 6,345,209,441.16/90,876.61
  6. Step 6: Final answer
    x = 69,822.25

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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.