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Finding the Fourth Proportional to 129,419.00, 194,119.17 and 40,697.88

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Solution

The fourth proportional to 129,419.00, 194,119.17 and 40,697.88 is: 61,043.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,419.00 : 194,119.17 = 40,697.88 : x
  2. Step 2: Convert to fraction form
    129,419.00/194,119.17 = 40,697.88/x
  3. Step 3: Cross multiply
    129,419.00x = 194,119.17 × 40,697.88
  4. Step 4: Simplify right side
    129,419.00x = 7,900,237,805.80
  5. Step 5: Solve for x
    x = 7,900,237,805.80/129,419.00
  6. Step 6: Final answer
    x = 61,043.88

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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.