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Finding the Fourth Proportional to 644,503.32, 966,686.94 and 171,236.52

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Solution

The fourth proportional to 644,503.32, 966,686.94 and 171,236.52 is: 256,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,503.32 : 966,686.94 = 171,236.52 : x
  2. Step 2: Convert to fraction form
    644,503.32/966,686.94 = 171,236.52/x
  3. Step 3: Cross multiply
    644,503.32x = 966,686.94 × 171,236.52
  4. Step 4: Simplify right side
    644,503.32x = 165,532,107,535.05
  5. Step 5: Solve for x
    x = 165,532,107,535.05/644,503.32
  6. Step 6: Final answer
    x = 256,836.70

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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.