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Finding the Fourth Proportional to 1,944,868.61, 2,917,761.15 and 665,490.02

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Solution

The fourth proportional to 1,944,868.61, 2,917,761.15 and 665,490.02 is: 998,391.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944,868.61 : 2,917,761.15 = 665,490.02 : x
  2. Step 2: Convert to fraction form
    1,944,868.61/2,917,761.15 = 665,490.02/x
  3. Step 3: Cross multiply
    1,944,868.61x = 2,917,761.15 × 665,490.02
  4. Step 4: Simplify right side
    1,944,868.61x = 1,941,740,911,479.92
  5. Step 5: Solve for x
    x = 1,941,740,911,479.92/1,944,868.61
  6. Step 6: Final answer
    x = 998,391.82

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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.