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Finding the Fourth Proportional to 807,691.67, 1,114,622.06 and 445,128.78

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Solution

The fourth proportional to 807,691.67, 1,114,622.06 and 445,128.78 is: 614,281.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,691.67 : 1,114,622.06 = 445,128.78 : x
  2. Step 2: Convert to fraction form
    807,691.67/1,114,622.06 = 445,128.78/x
  3. Step 3: Cross multiply
    807,691.67x = 1,114,622.06 × 445,128.78
  4. Step 4: Simplify right side
    807,691.67x = 496,150,357,728.89
  5. Step 5: Solve for x
    x = 496,150,357,728.89/807,691.67
  6. Step 6: Final answer
    x = 614,281.88

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