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Finding the Fourth Proportional to 58,201.71, 87,296.89 and 18,787.11

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Solution

The fourth proportional to 58,201.71, 87,296.89 and 18,787.11 is: 28,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,201.71 : 87,296.89 = 18,787.11 : x
  2. Step 2: Convert to fraction form
    58,201.71/87,296.89 = 18,787.11/x
  3. Step 3: Cross multiply
    58,201.71x = 87,296.89 × 18,787.11
  4. Step 4: Simplify right side
    58,201.71x = 1,640,056,275.09
  5. Step 5: Solve for x
    x = 1,640,056,275.09/58,201.71
  6. Step 6: Final answer
    x = 28,178.83

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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.