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Finding the Fourth Proportional to 57,718.80, 86,590.80 and 32,770.80

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Solution

The fourth proportional to 57,718.80, 86,590.80 and 32,770.80 is: 49,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.80 : 86,590.80 = 32,770.80 : x
  2. Step 2: Convert to fraction form
    57,718.80/86,590.80 = 32,770.80/x
  3. Step 3: Cross multiply
    57,718.80x = 86,590.80 × 32,770.80
  4. Step 4: Simplify right side
    57,718.80x = 2,837,649,788.64
  5. Step 5: Solve for x
    x = 2,837,649,788.64/57,718.80
  6. Step 6: Final answer
    x = 49,163.35

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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.