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Finding the Fourth Proportional to 577,691.70, 866,325.30 and 198,504.90

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Solution

The fourth proportional to 577,691.70, 866,325.30 and 198,504.90 is: 297,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,691.70 : 866,325.30 = 198,504.90 : x
  2. Step 2: Convert to fraction form
    577,691.70/866,325.30 = 198,504.90/x
  3. Step 3: Cross multiply
    577,691.70x = 866,325.30 × 198,504.90
  4. Step 4: Simplify right side
    577,691.70x = 171,969,817,043.97
  5. Step 5: Solve for x
    x = 171,969,817,043.97/577,691.70
  6. Step 6: Final answer
    x = 297,684.42

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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.