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Finding the Fourth Proportional to 8,871.55, 12,247.74 and 5,891.46

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Solution

The fourth proportional to 8,871.55, 12,247.74 and 5,891.46 is: 8,133.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.55 : 12,247.74 = 5,891.46 : x
  2. Step 2: Convert to fraction form
    8,871.55/12,247.74 = 5,891.46/x
  3. Step 3: Cross multiply
    8,871.55x = 12,247.74 × 5,891.46
  4. Step 4: Simplify right side
    8,871.55x = 72,157,070.30
  5. Step 5: Solve for x
    x = 72,157,070.30/8,871.55
  6. Step 6: Final answer
    x = 8,133.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.