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Finding the Fourth Proportional to 5,909.46, 8,876.48 and 4,986.79

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Solution

The fourth proportional to 5,909.46, 8,876.48 and 4,986.79 is: 7,490.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.46 : 8,876.48 = 4,986.79 : x
  2. Step 2: Convert to fraction form
    5,909.46/8,876.48 = 4,986.79/x
  3. Step 3: Cross multiply
    5,909.46x = 8,876.48 × 4,986.79
  4. Step 4: Simplify right side
    5,909.46x = 44,265,141.70
  5. Step 5: Solve for x
    x = 44,265,141.70/5,909.46
  6. Step 6: Final answer
    x = 7,490.56

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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.