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Finding the Fourth Proportional to 472,729.90, 708,503.55 and 236,138.62

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Solution

The fourth proportional to 472,729.90, 708,503.55 and 236,138.62 is: 353,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,729.90 : 708,503.55 = 236,138.62 : x
  2. Step 2: Convert to fraction form
    472,729.90/708,503.55 = 236,138.62/x
  3. Step 3: Cross multiply
    472,729.90x = 708,503.55 × 236,138.62
  4. Step 4: Simplify right side
    472,729.90x = 167,305,050,562.10
  5. Step 5: Solve for x
    x = 167,305,050,562.10/472,729.90
  6. Step 6: Final answer
    x = 353,912.56

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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.