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Finding the Fourth Proportional to 423,656.31, 635,484.11 and 108,113.22

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Solution

The fourth proportional to 423,656.31, 635,484.11 and 108,113.22 is: 162,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,656.31 : 635,484.11 = 108,113.22 : x
  2. Step 2: Convert to fraction form
    423,656.31/635,484.11 = 108,113.22/x
  3. Step 3: Cross multiply
    423,656.31x = 635,484.11 × 108,113.22
  4. Step 4: Simplify right side
    423,656.31x = 68,704,232,850.37
  5. Step 5: Solve for x
    x = 68,704,232,850.37/423,656.31
  6. Step 6: Final answer
    x = 162,169.74

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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.