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Finding the Fourth Proportional to 516,231.78, 712,491.10 and 386,062.45

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Solution

The fourth proportional to 516,231.78, 712,491.10 and 386,062.45 is: 532,834.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,231.78 : 712,491.10 = 386,062.45 : x
  2. Step 2: Convert to fraction form
    516,231.78/712,491.10 = 386,062.45/x
  3. Step 3: Cross multiply
    516,231.78x = 712,491.10 × 386,062.45
  4. Step 4: Simplify right side
    516,231.78x = 275,066,057,738.88
  5. Step 5: Solve for x
    x = 275,066,057,738.88/516,231.78
  6. Step 6: Final answer
    x = 532,834.41

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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.