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Finding the Fourth Proportional to 101,469.01, 152,178.90 and 42,272.38

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Solution

The fourth proportional to 101,469.01, 152,178.90 and 42,272.38 is: 63,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,469.01 : 152,178.90 = 42,272.38 : x
  2. Step 2: Convert to fraction form
    101,469.01/152,178.90 = 42,272.38/x
  3. Step 3: Cross multiply
    101,469.01x = 152,178.90 × 42,272.38
  4. Step 4: Simplify right side
    101,469.01x = 6,432,964,774.91
  5. Step 5: Solve for x
    x = 6,432,964,774.91/101,469.01
  6. Step 6: Final answer
    x = 63,398.32

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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.