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Finding the Fourth Proportional to 147,015.59, 220,352.49 and 66,933.11

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Solution

The fourth proportional to 147,015.59, 220,352.49 and 66,933.11 is: 100,321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,015.59 : 220,352.49 = 66,933.11 : x
  2. Step 2: Convert to fraction form
    147,015.59/220,352.49 = 66,933.11/x
  3. Step 3: Cross multiply
    147,015.59x = 220,352.49 × 66,933.11
  4. Step 4: Simplify right side
    147,015.59x = 14,748,876,350.18
  5. Step 5: Solve for x
    x = 14,748,876,350.18/147,015.59
  6. Step 6: Final answer
    x = 100,321.86

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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.