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Finding the Fourth Proportional to 1,249,819.97, 1,724,891.82 and 705,990.78

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Solution

The fourth proportional to 1,249,819.97, 1,724,891.82 and 705,990.78 is: 974,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,819.97 : 1,724,891.82 = 705,990.78 : x
  2. Step 2: Convert to fraction form
    1,249,819.97/1,724,891.82 = 705,990.78/x
  3. Step 3: Cross multiply
    1,249,819.97x = 1,724,891.82 × 705,990.78
  4. Step 4: Simplify right side
    1,249,819.97x = 1,217,757,718,769.95
  5. Step 5: Solve for x
    x = 1,217,757,718,769.95/1,249,819.97
  6. Step 6: Final answer
    x = 974,346.51

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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.