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Finding the Fourth Proportional to 57,385.92, 86,081.28 and 17,943.84

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Solution

The fourth proportional to 57,385.92, 86,081.28 and 17,943.84 is: 26,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,385.92 : 86,081.28 = 17,943.84 : x
  2. Step 2: Convert to fraction form
    57,385.92/86,081.28 = 17,943.84/x
  3. Step 3: Cross multiply
    57,385.92x = 86,081.28 × 17,943.84
  4. Step 4: Simplify right side
    57,385.92x = 1,544,628,715.32
  5. Step 5: Solve for x
    x = 1,544,628,715.32/57,385.92
  6. Step 6: Final answer
    x = 26,916.51

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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.