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Finding the Fourth Proportional to 29,469.17, 40,649.09 and 17,978.84

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Solution

The fourth proportional to 29,469.17, 40,649.09 and 17,978.84 is: 24,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,469.17 : 40,649.09 = 17,978.84 : x
  2. Step 2: Convert to fraction form
    29,469.17/40,649.09 = 17,978.84/x
  3. Step 3: Cross multiply
    29,469.17x = 40,649.09 × 17,978.84
  4. Step 4: Simplify right side
    29,469.17x = 730,823,496.98
  5. Step 5: Solve for x
    x = 730,823,496.98/29,469.17
  6. Step 6: Final answer
    x = 24,799.60

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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.