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Finding the Fourth Proportional to 75,170.91, 112,593.94 and 70,754.39

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Solution

The fourth proportional to 75,170.91, 112,593.94 and 70,754.39 is: 105,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,170.91 : 112,593.94 = 70,754.39 : x
  2. Step 2: Convert to fraction form
    75,170.91/112,593.94 = 70,754.39/x
  3. Step 3: Cross multiply
    75,170.91x = 112,593.94 × 70,754.39
  4. Step 4: Simplify right side
    75,170.91x = 7,966,515,542.40
  5. Step 5: Solve for x
    x = 7,966,515,542.40/75,170.91
  6. Step 6: Final answer
    x = 105,978.70

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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.