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Finding the Fourth Proportional to 239,722.32, 359,478.92 and 127,375.48

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Solution

The fourth proportional to 239,722.32, 359,478.92 and 127,375.48 is: 191,007.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,722.32 : 359,478.92 = 127,375.48 : x
  2. Step 2: Convert to fraction form
    239,722.32/359,478.92 = 127,375.48/x
  3. Step 3: Cross multiply
    239,722.32x = 359,478.92 × 127,375.48
  4. Step 4: Simplify right side
    239,722.32x = 45,788,799,984.88
  5. Step 5: Solve for x
    x = 45,788,799,984.88/239,722.32
  6. Step 6: Final answer
    x = 191,007.66

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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.