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Finding the Fourth Proportional to 251,240.70, 376,751.70 and 82,695.90

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Solution

The fourth proportional to 251,240.70, 376,751.70 and 82,695.90 is: 124,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,240.70 : 376,751.70 = 82,695.90 : x
  2. Step 2: Convert to fraction form
    251,240.70/376,751.70 = 82,695.90/x
  3. Step 3: Cross multiply
    251,240.70x = 376,751.70 × 82,695.90
  4. Step 4: Simplify right side
    251,240.70x = 31,155,820,908.03
  5. Step 5: Solve for x
    x = 31,155,820,908.03/251,240.70
  6. Step 6: Final answer
    x = 124,007.86

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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.