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Finding the Fourth Proportional to 29,103.90, 40,168.20 and 17,170.16

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Solution

The fourth proportional to 29,103.90, 40,168.20 and 17,170.16 is: 23,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,103.90 : 40,168.20 = 17,170.16 : x
  2. Step 2: Convert to fraction form
    29,103.90/40,168.20 = 17,170.16/x
  3. Step 3: Cross multiply
    29,103.90x = 40,168.20 × 17,170.16
  4. Step 4: Simplify right side
    29,103.90x = 689,694,420.91
  5. Step 5: Solve for x
    x = 689,694,420.91/29,103.90
  6. Step 6: Final answer
    x = 23,697.66

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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.