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Finding the Fourth Proportional to 423,890.50, 584,709.28 and 251,691.52

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Solution

The fourth proportional to 423,890.50, 584,709.28 and 251,691.52 is: 347,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,890.50 : 584,709.28 = 251,691.52 : x
  2. Step 2: Convert to fraction form
    423,890.50/584,709.28 = 251,691.52/x
  3. Step 3: Cross multiply
    423,890.50x = 584,709.28 × 251,691.52
  4. Step 4: Simplify right side
    423,890.50x = 147,166,367,441.31
  5. Step 5: Solve for x
    x = 147,166,367,441.31/423,890.50
  6. Step 6: Final answer
    x = 347,180.15

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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.