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Finding the Fourth Proportional to 1,806,162.87, 2,709,696.13 and 1,274,721.87

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Solution

The fourth proportional to 1,806,162.87, 2,709,696.13 and 1,274,721.87 is: 1,912,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806,162.87 : 2,709,696.13 = 1,274,721.87 : x
  2. Step 2: Convert to fraction form
    1,806,162.87/2,709,696.13 = 1,274,721.87/x
  3. Step 3: Cross multiply
    1,806,162.87x = 2,709,696.13 × 1,274,721.87
  4. Step 4: Simplify right side
    1,806,162.87x = 3,454,108,917,965.36
  5. Step 5: Solve for x
    x = 3,454,108,917,965.36/1,806,162.87
  6. Step 6: Final answer
    x = 1,912,401.69

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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.