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Finding the Fourth Proportional to 543,349.49, 814,691.90 and 259,126.97

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Solution

The fourth proportional to 543,349.49, 814,691.90 and 259,126.97 is: 388,531.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,349.49 : 814,691.90 = 259,126.97 : x
  2. Step 2: Convert to fraction form
    543,349.49/814,691.90 = 259,126.97/x
  3. Step 3: Cross multiply
    543,349.49x = 814,691.90 × 259,126.97
  4. Step 4: Simplify right side
    543,349.49x = 211,108,638,161.45
  5. Step 5: Solve for x
    x = 211,108,638,161.45/543,349.49
  6. Step 6: Final answer
    x = 388,531.96

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1.5x scale

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.