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Finding the Fourth Proportional to 330,195.91, 495,357.42 and 140,652.72

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Solution

The fourth proportional to 330,195.91, 495,357.42 and 140,652.72 is: 211,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,195.91 : 495,357.42 = 140,652.72 : x
  2. Step 2: Convert to fraction form
    330,195.91/495,357.42 = 140,652.72/x
  3. Step 3: Cross multiply
    330,195.91x = 495,357.42 × 140,652.72
  4. Step 4: Simplify right side
    330,195.91x = 69,673,369,022.63
  5. Step 5: Solve for x
    x = 69,673,369,022.63/330,195.91
  6. Step 6: Final answer
    x = 211,006.15

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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.