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Finding the Fourth Proportional to 472,458.30, 708,687.45 and 192,176.70

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Solution

The fourth proportional to 472,458.30, 708,687.45 and 192,176.70 is: 288,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,458.30 : 708,687.45 = 192,176.70 : x
  2. Step 2: Convert to fraction form
    472,458.30/708,687.45 = 192,176.70/x
  3. Step 3: Cross multiply
    472,458.30x = 708,687.45 × 192,176.70
  4. Step 4: Simplify right side
    472,458.30x = 136,193,215,472.42
  5. Step 5: Solve for x
    x = 136,193,215,472.42/472,458.30
  6. Step 6: Final answer
    x = 288,265.05

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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.