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Finding the Fourth Proportional to 330,491.88, 495,768.56 and 117,238.86

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Solution

The fourth proportional to 330,491.88, 495,768.56 and 117,238.86 is: 175,869.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,491.88 : 495,768.56 = 117,238.86 : x
  2. Step 2: Convert to fraction form
    330,491.88/495,768.56 = 117,238.86/x
  3. Step 3: Cross multiply
    330,491.88x = 495,768.56 × 117,238.86
  4. Step 4: Simplify right side
    330,491.88x = 58,123,340,798.24
  5. Step 5: Solve for x
    x = 58,123,340,798.24/330,491.88
  6. Step 6: Final answer
    x = 175,869.19

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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.