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Finding the Fourth Proportional to 92,914.72, 128,223.52 and 50,474

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Solution

The fourth proportional to 92,914.72, 128,223.52 and 50,474 is: 69,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,914.72 : 128,223.52 = 50,474 : x
  2. Step 2: Convert to fraction form
    92,914.72/128,223.52 = 50,474/x
  3. Step 3: Cross multiply
    92,914.72x = 128,223.52 × 50,474
  4. Step 4: Simplify right side
    92,914.72x = 6,471,953,948.48
  5. Step 5: Solve for x
    x = 6,471,953,948.48/92,914.72
  6. Step 6: Final answer
    x = 69,654.78

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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.