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Finding the Fourth Proportional to 587,559.56, 811,080.22 and 396,831.29

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Solution

The fourth proportional to 587,559.56, 811,080.22 and 396,831.29 is: 547,794.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,559.56 : 811,080.22 = 396,831.29 : x
  2. Step 2: Convert to fraction form
    587,559.56/811,080.22 = 396,831.29/x
  3. Step 3: Cross multiply
    587,559.56x = 811,080.22 × 396,831.29
  4. Step 4: Simplify right side
    587,559.56x = 321,862,011,031.71
  5. Step 5: Solve for x
    x = 321,862,011,031.71/587,559.56
  6. Step 6: Final answer
    x = 547,794.69

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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.