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Finding the Fourth Proportional to 543,031.80, 814,679.37 and 163,929.87

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Solution

The fourth proportional to 543,031.80, 814,679.37 and 163,929.87 is: 245,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,031.80 : 814,679.37 = 163,929.87 : x
  2. Step 2: Convert to fraction form
    543,031.80/814,679.37 = 163,929.87/x
  3. Step 3: Cross multiply
    543,031.80x = 814,679.37 × 163,929.87
  4. Step 4: Simplify right side
    543,031.80x = 133,550,283,215.78
  5. Step 5: Solve for x
    x = 133,550,283,215.78/543,031.80
  6. Step 6: Final answer
    x = 245,934.55

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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.