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Finding the Fourth Proportional to 541,323.88, 812,067.81 and 392,685.78

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Solution

The fourth proportional to 541,323.88, 812,067.81 and 392,685.78 is: 589,088.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,323.88 : 812,067.81 = 392,685.78 : x
  2. Step 2: Convert to fraction form
    541,323.88/812,067.81 = 392,685.78/x
  3. Step 3: Cross multiply
    541,323.88x = 812,067.81 × 392,685.78
  4. Step 4: Simplify right side
    541,323.88x = 318,887,481,382.74
  5. Step 5: Solve for x
    x = 318,887,481,382.74/541,323.88
  6. Step 6: Final answer
    x = 589,088.15

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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.