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Finding the Fourth Proportional to 57,356.70, 86,047.20 and 17,372.40

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Solution

The fourth proportional to 57,356.70, 86,047.20 and 17,372.40 is: 26,062.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,356.70 : 86,047.20 = 17,372.40 : x
  2. Step 2: Convert to fraction form
    57,356.70/86,047.20 = 17,372.40/x
  3. Step 3: Cross multiply
    57,356.70x = 86,047.20 × 17,372.40
  4. Step 4: Simplify right side
    57,356.70x = 1,494,846,377.28
  5. Step 5: Solve for x
    x = 1,494,846,377.28/57,356.70
  6. Step 6: Final answer
    x = 26,062.28

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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.