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Finding the Fourth Proportional to 235,680.76, 353,576.50 and 77,909.20

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Solution

The fourth proportional to 235,680.76, 353,576.50 and 77,909.20 is: 116,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,680.76 : 353,576.50 = 77,909.20 : x
  2. Step 2: Convert to fraction form
    235,680.76/353,576.50 = 77,909.20/x
  3. Step 3: Cross multiply
    235,680.76x = 353,576.50 × 77,909.20
  4. Step 4: Simplify right side
    235,680.76x = 27,546,862,253.80
  5. Step 5: Solve for x
    x = 27,546,862,253.80/235,680.76
  6. Step 6: Final answer
    x = 116,882.10

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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.