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Finding the Fourth Proportional to 714,540.06, 986,039.74 and 404,435.98

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Solution

The fourth proportional to 714,540.06, 986,039.74 and 404,435.98 is: 558,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,540.06 : 986,039.74 = 404,435.98 : x
  2. Step 2: Convert to fraction form
    714,540.06/986,039.74 = 404,435.98/x
  3. Step 3: Cross multiply
    714,540.06x = 986,039.74 × 404,435.98
  4. Step 4: Simplify right side
    714,540.06x = 398,789,948,565.85
  5. Step 5: Solve for x
    x = 398,789,948,565.85/714,540.06
  6. Step 6: Final answer
    x = 558,107.19

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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.