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Finding the Fourth Proportional to 8,586.92, 12,879.95 and 5,031.05

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Solution

The fourth proportional to 8,586.92, 12,879.95 and 5,031.05 is: 7,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.92 : 12,879.95 = 5,031.05 : x
  2. Step 2: Convert to fraction form
    8,586.92/12,879.95 = 5,031.05/x
  3. Step 3: Cross multiply
    8,586.92x = 12,879.95 × 5,031.05
  4. Step 4: Simplify right side
    8,586.92x = 64,799,672.45
  5. Step 5: Solve for x
    x = 64,799,672.45/8,586.92
  6. Step 6: Final answer
    x = 7,546.33

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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.