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Finding the Fourth Proportional to 8,799.98, 12,143.42 and 4,820.85

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Solution

The fourth proportional to 8,799.98, 12,143.42 and 4,820.85 is: 6,652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.98 : 12,143.42 = 4,820.85 : x
  2. Step 2: Convert to fraction form
    8,799.98/12,143.42 = 4,820.85/x
  3. Step 3: Cross multiply
    8,799.98x = 12,143.42 × 4,820.85
  4. Step 4: Simplify right side
    8,799.98x = 58,541,600.28
  5. Step 5: Solve for x
    x = 58,541,600.28/8,799.98
  6. Step 6: Final answer
    x = 6,652.47

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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.