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Finding the Fourth Proportional to 29,407, 40,581.71 and 15,978.27

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Solution

The fourth proportional to 29,407, 40,581.71 and 15,978.27 is: 22,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,407 : 40,581.71 = 15,978.27 : x
  2. Step 2: Convert to fraction form
    29,407/40,581.71 = 15,978.27/x
  3. Step 3: Cross multiply
    29,407x = 40,581.71 × 15,978.27
  4. Step 4: Simplify right side
    29,407x = 648,425,519.44
  5. Step 5: Solve for x
    x = 648,425,519.44/29,407
  6. Step 6: Final answer
    x = 22,050.04

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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.