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Finding the Fourth Proportional to 423,656.69, 635,490.17 and 124,143.34

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Solution

The fourth proportional to 423,656.69, 635,490.17 and 124,143.34 is: 186,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,656.69 : 635,490.17 = 124,143.34 : x
  2. Step 2: Convert to fraction form
    423,656.69/635,490.17 = 124,143.34/x
  3. Step 3: Cross multiply
    423,656.69x = 635,490.17 × 124,143.34
  4. Step 4: Simplify right side
    423,656.69x = 78,891,872,240.97
  5. Step 5: Solve for x
    x = 78,891,872,240.97/423,656.69
  6. Step 6: Final answer
    x = 186,216.51

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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.