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Finding the Fourth Proportional to 104,891.40, 157,337.10 and 75,585.60

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Solution

The fourth proportional to 104,891.40, 157,337.10 and 75,585.60 is: 113,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,891.40 : 157,337.10 = 75,585.60 : x
  2. Step 2: Convert to fraction form
    104,891.40/157,337.10 = 75,585.60/x
  3. Step 3: Cross multiply
    104,891.40x = 157,337.10 × 75,585.60
  4. Step 4: Simplify right side
    104,891.40x = 11,892,419,105.76
  5. Step 5: Solve for x
    x = 11,892,419,105.76/104,891.40
  6. Step 6: Final answer
    x = 113,378.40

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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.