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Finding the Fourth Proportional to 336,648.20, 505,061.40 and 147,027.20

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Solution

The fourth proportional to 336,648.20, 505,061.40 and 147,027.20 is: 220,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,648.20 : 505,061.40 = 147,027.20 : x
  2. Step 2: Convert to fraction form
    336,648.20/505,061.40 = 147,027.20/x
  3. Step 3: Cross multiply
    336,648.20x = 505,061.40 × 147,027.20
  4. Step 4: Simplify right side
    336,648.20x = 74,257,763,470.08
  5. Step 5: Solve for x
    x = 74,257,763,470.08/336,648.20
  6. Step 6: Final answer
    x = 220,579.71

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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.