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Finding the Fourth Proportional to 425,859.48, 638,789.22 and 110,316.38

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Solution

The fourth proportional to 425,859.48, 638,789.22 and 110,316.38 is: 165,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,859.48 : 638,789.22 = 110,316.38 : x
  2. Step 2: Convert to fraction form
    425,859.48/638,789.22 = 110,316.38/x
  3. Step 3: Cross multiply
    425,859.48x = 638,789.22 × 110,316.38
  4. Step 4: Simplify right side
    425,859.48x = 70,468,911,139.48
  5. Step 5: Solve for x
    x = 70,468,911,139.48/425,859.48
  6. Step 6: Final answer
    x = 165,474.56

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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.