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Finding the Fourth Proportional to 628,043.72, 866,691.96 and 341,557.64

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Solution

The fourth proportional to 628,043.72, 866,691.96 and 341,557.64 is: 471,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,043.72 : 866,691.96 = 341,557.64 : x
  2. Step 2: Convert to fraction form
    628,043.72/866,691.96 = 341,557.64/x
  3. Step 3: Cross multiply
    628,043.72x = 866,691.96 × 341,557.64
  4. Step 4: Simplify right side
    628,043.72x = 296,025,260,464.57
  5. Step 5: Solve for x
    x = 296,025,260,464.57/628,043.72
  6. Step 6: Final answer
    x = 471,344.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.