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Finding the Fourth Proportional to 62,874.36, 94,320.90 and 20,758.90

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Solution

The fourth proportional to 62,874.36, 94,320.90 and 20,758.90 is: 31,141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,874.36 : 94,320.90 = 20,758.90 : x
  2. Step 2: Convert to fraction form
    62,874.36/94,320.90 = 20,758.90/x
  3. Step 3: Cross multiply
    62,874.36x = 94,320.90 × 20,758.90
  4. Step 4: Simplify right side
    62,874.36x = 1,957,997,703.34
  5. Step 5: Solve for x
    x = 1,957,997,703.34/62,874.36
  6. Step 6: Final answer
    x = 31,141.43

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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.