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Finding the Fourth Proportional to 330,610.06, 495,624.21 and 131,070.70

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Solution

The fourth proportional to 330,610.06, 495,624.21 and 131,070.70 is: 196,490.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,610.06 : 495,624.21 = 131,070.70 : x
  2. Step 2: Convert to fraction form
    330,610.06/495,624.21 = 131,070.70/x
  3. Step 3: Cross multiply
    330,610.06x = 495,624.21 × 131,070.70
  4. Step 4: Simplify right side
    330,610.06x = 64,961,812,141.65
  5. Step 5: Solve for x
    x = 64,961,812,141.65/330,610.06
  6. Step 6: Final answer
    x = 196,490.73

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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.