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Finding the Fourth Proportional to 425,131.27, 586,722.62 and 317,514.47

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Solution

The fourth proportional to 425,131.27, 586,722.62 and 317,514.47 is: 438,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,131.27 : 586,722.62 = 317,514.47 : x
  2. Step 2: Convert to fraction form
    425,131.27/586,722.62 = 317,514.47/x
  3. Step 3: Cross multiply
    425,131.27x = 586,722.62 × 317,514.47
  4. Step 4: Simplify right side
    425,131.27x = 186,292,919,586.49
  5. Step 5: Solve for x
    x = 186,292,919,586.49/425,131.27
  6. Step 6: Final answer
    x = 438,200.94

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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.