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Finding the Fourth Proportional to 372,874.20, 559,392.30 and 136,216.50

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Solution

The fourth proportional to 372,874.20, 559,392.30 and 136,216.50 is: 204,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,874.20 : 559,392.30 = 136,216.50 : x
  2. Step 2: Convert to fraction form
    372,874.20/559,392.30 = 136,216.50/x
  3. Step 3: Cross multiply
    372,874.20x = 559,392.30 × 136,216.50
  4. Step 4: Simplify right side
    372,874.20x = 76,198,461,232.95
  5. Step 5: Solve for x
    x = 76,198,461,232.95/372,874.20
  6. Step 6: Final answer
    x = 204,354.34

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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.