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Finding the Fourth Proportional to 29,641.86, 40,905.18 and 16,213.07

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Solution

The fourth proportional to 29,641.86, 40,905.18 and 16,213.07 is: 22,373.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,641.86 : 40,905.18 = 16,213.07 : x
  2. Step 2: Convert to fraction form
    29,641.86/40,905.18 = 16,213.07/x
  3. Step 3: Cross multiply
    29,641.86x = 40,905.18 × 16,213.07
  4. Step 4: Simplify right side
    29,641.86x = 663,198,546.70
  5. Step 5: Solve for x
    x = 663,198,546.70/29,641.86
  6. Step 6: Final answer
    x = 22,373.72

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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.