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Finding the Fourth Proportional to 560,198.34, 773,139.06 and 318,517.12

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Solution

The fourth proportional to 560,198.34, 773,139.06 and 318,517.12 is: 439,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,198.34 : 773,139.06 = 318,517.12 : x
  2. Step 2: Convert to fraction form
    560,198.34/773,139.06 = 318,517.12/x
  3. Step 3: Cross multiply
    560,198.34x = 773,139.06 × 318,517.12
  4. Step 4: Simplify right side
    560,198.34x = 246,258,027,717.13
  5. Step 5: Solve for x
    x = 246,258,027,717.13/560,198.34
  6. Step 6: Final answer
    x = 439,590.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.