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Finding the Fourth Proportional to 92,744, 139,001.97 and 42,754.76

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Solution

The fourth proportional to 92,744, 139,001.97 and 42,754.76 is: 64,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,744 : 139,001.97 = 42,754.76 : x
  2. Step 2: Convert to fraction form
    92,744/139,001.97 = 42,754.76/x
  3. Step 3: Cross multiply
    92,744x = 139,001.97 × 42,754.76
  4. Step 4: Simplify right side
    92,744x = 5,942,995,866.88
  5. Step 5: Solve for x
    x = 5,942,995,866.88/92,744
  6. Step 6: Final answer
    x = 64,079.57

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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.