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Finding the Fourth Proportional to 398,309.89, 549,416.56 and 237,044.56

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Solution

The fourth proportional to 398,309.89, 549,416.56 and 237,044.56 is: 326,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309.89 : 549,416.56 = 237,044.56 : x
  2. Step 2: Convert to fraction form
    398,309.89/549,416.56 = 237,044.56/x
  3. Step 3: Cross multiply
    398,309.89x = 549,416.56 × 237,044.56
  4. Step 4: Simplify right side
    398,309.89x = 130,236,206,721.91
  5. Step 5: Solve for x
    x = 130,236,206,721.91/398,309.89
  6. Step 6: Final answer
    x = 326,972.06

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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.