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Finding the Fourth Proportional to 92,703.96, 138,944.70 and 42,715.44

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Solution

The fourth proportional to 92,703.96, 138,944.70 and 42,715.44 is: 64,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,703.96 : 138,944.70 = 42,715.44 : x
  2. Step 2: Convert to fraction form
    92,703.96/138,944.70 = 42,715.44/x
  3. Step 3: Cross multiply
    92,703.96x = 138,944.70 × 42,715.44
  4. Step 4: Simplify right side
    92,703.96x = 5,935,083,996.17
  5. Step 5: Solve for x
    x = 5,935,083,996.17/92,703.96
  6. Step 6: Final answer
    x = 64,021.90

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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.