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Finding the Fourth Proportional to 101,281.67, 151,649.12 and 67,929.92

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Solution

The fourth proportional to 101,281.67, 151,649.12 and 67,929.92 is: 101,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,281.67 : 151,649.12 = 67,929.92 : x
  2. Step 2: Convert to fraction form
    101,281.67/151,649.12 = 67,929.92/x
  3. Step 3: Cross multiply
    101,281.67x = 151,649.12 × 67,929.92
  4. Step 4: Simplify right side
    101,281.67x = 10,301,512,001.25
  5. Step 5: Solve for x
    x = 10,301,512,001.25/101,281.67
  6. Step 6: Final answer
    x = 101,711.52

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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.