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Finding the Fourth Proportional to 144,912.10, 217,368.15 and 132,081.70

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Solution

The fourth proportional to 144,912.10, 217,368.15 and 132,081.70 is: 198,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,912.10 : 217,368.15 = 132,081.70 : x
  2. Step 2: Convert to fraction form
    144,912.10/217,368.15 = 132,081.70/x
  3. Step 3: Cross multiply
    144,912.10x = 217,368.15 × 132,081.70
  4. Step 4: Simplify right side
    144,912.10x = 28,710,354,777.86
  5. Step 5: Solve for x
    x = 28,710,354,777.86/144,912.10
  6. Step 6: Final answer
    x = 198,122.55

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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.