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Finding the Fourth Proportional to 260,887.52, 391,397.16 and 73,900.64

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Solution

The fourth proportional to 260,887.52, 391,397.16 and 73,900.64 is: 110,869.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,887.52 : 391,397.16 = 73,900.64 : x
  2. Step 2: Convert to fraction form
    260,887.52/391,397.16 = 73,900.64/x
  3. Step 3: Cross multiply
    260,887.52x = 391,397.16 × 73,900.64
  4. Step 4: Simplify right side
    260,887.52x = 28,924,500,618.18
  5. Step 5: Solve for x
    x = 28,924,500,618.18/260,887.52
  6. Step 6: Final answer
    x = 110,869.62

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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.