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Finding the Fourth Proportional to 5,311.68, 7,955.92 and 4,847.55

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Solution

The fourth proportional to 5,311.68, 7,955.92 and 4,847.55 is: 7,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.68 : 7,955.92 = 4,847.55 : x
  2. Step 2: Convert to fraction form
    5,311.68/7,955.92 = 4,847.55/x
  3. Step 3: Cross multiply
    5,311.68x = 7,955.92 × 4,847.55
  4. Step 4: Simplify right side
    5,311.68x = 38,566,720.00
  5. Step 5: Solve for x
    x = 38,566,720.00/5,311.68
  6. Step 6: Final answer
    x = 7,260.74

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1.5x scale

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.