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Finding the Fourth Proportional to 986,745.78, 1,361,713.17 and 534,036.66

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Solution

The fourth proportional to 986,745.78, 1,361,713.17 and 534,036.66 is: 736,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,745.78 : 1,361,713.17 = 534,036.66 : x
  2. Step 2: Convert to fraction form
    986,745.78/1,361,713.17 = 534,036.66/x
  3. Step 3: Cross multiply
    986,745.78x = 1,361,713.17 × 534,036.66
  4. Step 4: Simplify right side
    986,745.78x = 727,204,753,184.81
  5. Step 5: Solve for x
    x = 727,204,753,184.81/986,745.78
  6. Step 6: Final answer
    x = 736,972.75

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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.