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Finding the Fourth Proportional to 423,508.26, 635,270.58 and 103,662.92

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Solution

The fourth proportional to 423,508.26, 635,270.58 and 103,662.92 is: 155,496.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,508.26 : 635,270.58 = 103,662.92 : x
  2. Step 2: Convert to fraction form
    423,508.26/635,270.58 = 103,662.92/x
  3. Step 3: Cross multiply
    423,508.26x = 635,270.58 × 103,662.92
  4. Step 4: Simplify right side
    423,508.26x = 65,854,003,312.89
  5. Step 5: Solve for x
    x = 65,854,003,312.89/423,508.26
  6. Step 6: Final answer
    x = 155,496.38

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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.