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Finding the Fourth Proportional to 52,568.90, 78,865.92 and 17,508.86

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Solution

The fourth proportional to 52,568.90, 78,865.92 and 17,508.86 is: 26,267.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,568.90 : 78,865.92 = 17,508.86 : x
  2. Step 2: Convert to fraction form
    52,568.90/78,865.92 = 17,508.86/x
  3. Step 3: Cross multiply
    52,568.90x = 78,865.92 × 17,508.86
  4. Step 4: Simplify right side
    52,568.90x = 1,380,852,352.05
  5. Step 5: Solve for x
    x = 1,380,852,352.05/52,568.90
  6. Step 6: Final answer
    x = 26,267.48

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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.