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Finding the Fourth Proportional to 656,924.60, 985,302.18 and 207,691.10

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Solution

The fourth proportional to 656,924.60, 985,302.18 and 207,691.10 is: 311,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,924.60 : 985,302.18 = 207,691.10 : x
  2. Step 2: Convert to fraction form
    656,924.60/985,302.18 = 207,691.10/x
  3. Step 3: Cross multiply
    656,924.60x = 985,302.18 × 207,691.10
  4. Step 4: Simplify right side
    656,924.60x = 204,638,493,596.60
  5. Step 5: Solve for x
    x = 204,638,493,596.60/656,924.60
  6. Step 6: Final answer
    x = 311,509.87

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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.