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Finding the Fourth Proportional to 29,396.40, 40,566.84 and 16,820.88

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Solution

The fourth proportional to 29,396.40, 40,566.84 and 16,820.88 is: 23,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,396.40 : 40,566.84 = 16,820.88 : x
  2. Step 2: Convert to fraction form
    29,396.40/40,566.84 = 16,820.88/x
  3. Step 3: Cross multiply
    29,396.40x = 40,566.84 × 16,820.88
  4. Step 4: Simplify right side
    29,396.40x = 682,369,947.62
  5. Step 5: Solve for x
    x = 682,369,947.62/29,396.40
  6. Step 6: Final answer
    x = 23,212.70

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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.