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Finding the Fourth Proportional to 819,340.68, 1,229,011 and 258,418.92

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Solution

The fourth proportional to 819,340.68, 1,229,011 and 258,418.92 is: 387,628.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,340.68 : 1,229,011 = 258,418.92 : x
  2. Step 2: Convert to fraction form
    819,340.68/1,229,011 = 258,418.92/x
  3. Step 3: Cross multiply
    819,340.68x = 1,229,011 × 258,418.92
  4. Step 4: Simplify right side
    819,340.68x = 317,599,695,288.12
  5. Step 5: Solve for x
    x = 317,599,695,288.12/819,340.68
  6. Step 6: Final answer
    x = 387,628.37

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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.