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Finding the Fourth Proportional to 441,230.31, 661,626.85 and 156,878.25

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Solution

The fourth proportional to 441,230.31, 661,626.85 and 156,878.25 is: 235,239.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,230.31 : 661,626.85 = 156,878.25 : x
  2. Step 2: Convert to fraction form
    441,230.31/661,626.85 = 156,878.25/x
  3. Step 3: Cross multiply
    441,230.31x = 661,626.85 × 156,878.25
  4. Step 4: Simplify right side
    441,230.31x = 103,794,862,381.01
  5. Step 5: Solve for x
    x = 103,794,862,381.01/441,230.31
  6. Step 6: Final answer
    x = 235,239.65

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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.