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Finding the Fourth Proportional to 29,105.64, 40,170.62 and 17,171.91

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Solution

The fourth proportional to 29,105.64, 40,170.62 and 17,171.91 is: 23,700.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,105.64 : 40,170.62 = 17,171.91 : x
  2. Step 2: Convert to fraction form
    29,105.64/40,170.62 = 17,171.91/x
  3. Step 3: Cross multiply
    29,105.64x = 40,170.62 × 17,171.91
  4. Step 4: Simplify right side
    29,105.64x = 689,806,271.28
  5. Step 5: Solve for x
    x = 689,806,271.28/29,105.64
  6. Step 6: Final answer
    x = 23,700.09

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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.