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Finding the Fourth Proportional to 906,798.80, 1,360,198.20 and 749,205.20

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Solution

The fourth proportional to 906,798.80, 1,360,198.20 and 749,205.20 is: 1,123,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,798.80 : 1,360,198.20 = 749,205.20 : x
  2. Step 2: Convert to fraction form
    906,798.80/1,360,198.20 = 749,205.20/x
  3. Step 3: Cross multiply
    906,798.80x = 1,360,198.20 × 749,205.20
  4. Step 4: Simplify right side
    906,798.80x = 1,019,067,564,470.64
  5. Step 5: Solve for x
    x = 1,019,067,564,470.64/906,798.80
  6. Step 6: Final answer
    x = 1,123,807.80

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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.