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Finding the Fourth Proportional to 356,522.40, 534,610.80 and 198,583.20

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Solution

The fourth proportional to 356,522.40, 534,610.80 and 198,583.20 is: 297,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,522.40 : 534,610.80 = 198,583.20 : x
  2. Step 2: Convert to fraction form
    356,522.40/534,610.80 = 198,583.20/x
  3. Step 3: Cross multiply
    356,522.40x = 534,610.80 × 198,583.20
  4. Step 4: Simplify right side
    356,522.40x = 106,164,723,418.56
  5. Step 5: Solve for x
    x = 106,164,723,418.56/356,522.40
  6. Step 6: Final answer
    x = 297,778.55

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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.