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Finding the Fourth Proportional to 140,920.76, 211,366.56 and 132,697.64

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Solution

The fourth proportional to 140,920.76, 211,366.56 and 132,697.64 is: 199,032.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,920.76 : 211,366.56 = 132,697.64 : x
  2. Step 2: Convert to fraction form
    140,920.76/211,366.56 = 132,697.64/x
  3. Step 3: Cross multiply
    140,920.76x = 211,366.56 × 132,697.64
  4. Step 4: Simplify right side
    140,920.76x = 28,047,844,712.95
  5. Step 5: Solve for x
    x = 28,047,844,712.95/140,920.76
  6. Step 6: Final answer
    x = 199,032.73

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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.