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Finding the Fourth Proportional to 58,199.71, 87,293.89 and 18,785.11

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Solution

The fourth proportional to 58,199.71, 87,293.89 and 18,785.11 is: 28,175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,199.71 : 87,293.89 = 18,785.11 : x
  2. Step 2: Convert to fraction form
    58,199.71/87,293.89 = 18,785.11/x
  3. Step 3: Cross multiply
    58,199.71x = 87,293.89 × 18,785.11
  4. Step 4: Simplify right side
    58,199.71x = 1,639,825,325.98
  5. Step 5: Solve for x
    x = 1,639,825,325.98/58,199.71
  6. Step 6: Final answer
    x = 28,175.83

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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.