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Finding the Fourth Proportional to 75,872.68, 104,670.76 and 45,640.58

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Solution

The fourth proportional to 75,872.68, 104,670.76 and 45,640.58 is: 62,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,872.68 : 104,670.76 = 45,640.58 : x
  2. Step 2: Convert to fraction form
    75,872.68/104,670.76 = 45,640.58/x
  3. Step 3: Cross multiply
    75,872.68x = 104,670.76 × 45,640.58
  4. Step 4: Simplify right side
    75,872.68x = 4,777,234,195.44
  5. Step 5: Solve for x
    x = 4,777,234,195.44/75,872.68
  6. Step 6: Final answer
    x = 62,963.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.