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Finding the Fourth Proportional to 29,642.58, 40,905.91 and 16,213.54

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Solution

The fourth proportional to 29,642.58, 40,905.91 and 16,213.54 is: 22,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,642.58 : 40,905.91 = 16,213.54 : x
  2. Step 2: Convert to fraction form
    29,642.58/40,905.91 = 16,213.54/x
  3. Step 3: Cross multiply
    29,642.58x = 40,905.91 × 16,213.54
  4. Step 4: Simplify right side
    29,642.58x = 663,229,403.49
  5. Step 5: Solve for x
    x = 663,229,403.49/29,642.58
  6. Step 6: Final answer
    x = 22,374.21

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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.