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Finding the Fourth Proportional to 58,200.71, 87,295.39 and 18,786.11

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Solution

The fourth proportional to 58,200.71, 87,295.39 and 18,786.11 is: 28,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,200.71 : 87,295.39 = 18,786.11 : x
  2. Step 2: Convert to fraction form
    58,200.71/87,295.39 = 18,786.11/x
  3. Step 3: Cross multiply
    58,200.71x = 87,295.39 × 18,786.11
  4. Step 4: Simplify right side
    58,200.71x = 1,639,940,799.03
  5. Step 5: Solve for x
    x = 1,639,940,799.03/58,200.71
  6. Step 6: Final answer
    x = 28,177.33

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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.