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Finding the Fourth Proportional to 250,331.32, 375,580.80 and 81,859.42

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Solution

The fourth proportional to 250,331.32, 375,580.80 and 81,859.42 is: 122,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,331.32 : 375,580.80 = 81,859.42 : x
  2. Step 2: Convert to fraction form
    250,331.32/375,580.80 = 81,859.42/x
  3. Step 3: Cross multiply
    250,331.32x = 375,580.80 × 81,859.42
  4. Step 4: Simplify right side
    250,331.32x = 30,744,826,451.14
  5. Step 5: Solve for x
    x = 30,744,826,451.14/250,331.32
  6. Step 6: Final answer
    x = 122,816.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.