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Finding the Fourth Proportional to 423,709.52, 635,565.31 and 103,862.82

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Solution

The fourth proportional to 423,709.52, 635,565.31 and 103,862.82 is: 155,794.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,709.52 : 635,565.31 = 103,862.82 : x
  2. Step 2: Convert to fraction form
    423,709.52/635,565.31 = 103,862.82/x
  3. Step 3: Cross multiply
    423,709.52x = 635,565.31 × 103,862.82
  4. Step 4: Simplify right side
    423,709.52x = 66,011,605,131.12
  5. Step 5: Solve for x
    x = 66,011,605,131.12/423,709.52
  6. Step 6: Final answer
    x = 155,794.48

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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.