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Finding the Fourth Proportional to 644,133.90, 966,200.85 and 455,177.10

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Solution

The fourth proportional to 644,133.90, 966,200.85 and 455,177.10 is: 682,765.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,133.90 : 966,200.85 = 455,177.10 : x
  2. Step 2: Convert to fraction form
    644,133.90/966,200.85 = 455,177.10/x
  3. Step 3: Cross multiply
    644,133.90x = 966,200.85 × 455,177.10
  4. Step 4: Simplify right side
    644,133.90x = 439,792,500,920.54
  5. Step 5: Solve for x
    x = 439,792,500,920.54/644,133.90
  6. Step 6: Final answer
    x = 682,765.65

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Similar ratio
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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.