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Finding the Fourth Proportional to 1,600,983.76, 2,209,375.02 and 875,815.92

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Solution

The fourth proportional to 1,600,983.76, 2,209,375.02 and 875,815.92 is: 1,208,635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,600,983.76 : 2,209,375.02 = 875,815.92 : x
  2. Step 2: Convert to fraction form
    1,600,983.76/2,209,375.02 = 875,815.92/x
  3. Step 3: Cross multiply
    1,600,983.76x = 2,209,375.02 × 875,815.92
  4. Step 4: Simplify right side
    1,600,983.76x = 1,935,005,815,766.32
  5. Step 5: Solve for x
    x = 1,935,005,815,766.32/1,600,983.76
  6. Step 6: Final answer
    x = 1,208,635.51

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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.