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Finding the Fourth Proportional to 1,669,905.11, 2,304,686.05 and 935,139.13

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Solution

The fourth proportional to 1,669,905.11, 2,304,686.05 and 935,139.13 is: 1,290,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,905.11 : 2,304,686.05 = 935,139.13 : x
  2. Step 2: Convert to fraction form
    1,669,905.11/2,304,686.05 = 935,139.13/x
  3. Step 3: Cross multiply
    1,669,905.11x = 2,304,686.05 × 935,139.13
  4. Step 4: Simplify right side
    1,669,905.11x = 2,155,202,099,620.57
  5. Step 5: Solve for x
    x = 2,155,202,099,620.57/1,669,905.11
  6. Step 6: Final answer
    x = 1,290,613.51

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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.