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Finding the Fourth Proportional to 423,788.28, 635,709.42 and 124,263.24

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Solution

The fourth proportional to 423,788.28, 635,709.42 and 124,263.24 is: 186,402.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,788.28 : 635,709.42 = 124,263.24 : x
  2. Step 2: Convert to fraction form
    423,788.28/635,709.42 = 124,263.24/x
  3. Step 3: Cross multiply
    423,788.28x = 635,709.42 × 124,263.24
  4. Step 4: Simplify right side
    423,788.28x = 78,995,312,227.72
  5. Step 5: Solve for x
    x = 78,995,312,227.72/423,788.28
  6. Step 6: Final answer
    x = 186,402.78

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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.