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Finding the Fourth Proportional to 243,601.20, 365,401.80 and 168,805.80

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Solution

The fourth proportional to 243,601.20, 365,401.80 and 168,805.80 is: 253,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,601.20 : 365,401.80 = 168,805.80 : x
  2. Step 2: Convert to fraction form
    243,601.20/365,401.80 = 168,805.80/x
  3. Step 3: Cross multiply
    243,601.20x = 365,401.80 × 168,805.80
  4. Step 4: Simplify right side
    243,601.20x = 61,681,943,170.44
  5. Step 5: Solve for x
    x = 61,681,943,170.44/243,601.20
  6. Step 6: Final answer
    x = 253,208.70

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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.