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Finding the Fourth Proportional to 104,569.28, 156,744.28 and 51,187.66

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Solution

The fourth proportional to 104,569.28, 156,744.28 and 51,187.66 is: 76,727.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,569.28 : 156,744.28 = 51,187.66 : x
  2. Step 2: Convert to fraction form
    104,569.28/156,744.28 = 51,187.66/x
  3. Step 3: Cross multiply
    104,569.28x = 156,744.28 × 51,187.66
  4. Step 4: Simplify right side
    104,569.28x = 8,023,372,911.58
  5. Step 5: Solve for x
    x = 8,023,372,911.58/104,569.28
  6. Step 6: Final answer
    x = 76,727.82

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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.