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Finding the Fourth Proportional to 58,594.71, 87,874.11 and 21,150.21

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Solution

The fourth proportional to 58,594.71, 87,874.11 and 21,150.21 is: 31,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,594.71 : 87,874.11 = 21,150.21 : x
  2. Step 2: Convert to fraction form
    58,594.71/87,874.11 = 21,150.21/x
  3. Step 3: Cross multiply
    58,594.71x = 87,874.11 × 21,150.21
  4. Step 4: Simplify right side
    58,594.71x = 1,858,555,880.06
  5. Step 5: Solve for x
    x = 1,858,555,880.06/58,594.71
  6. Step 6: Final answer
    x = 31,718.83

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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.