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Finding the Fourth Proportional to 29,367.91, 40,527.75 and 15,939.16

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Solution

The fourth proportional to 29,367.91, 40,527.75 and 15,939.16 is: 21,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,367.91 : 40,527.75 = 15,939.16 : x
  2. Step 2: Convert to fraction form
    29,367.91/40,527.75 = 15,939.16/x
  3. Step 3: Cross multiply
    29,367.91x = 40,527.75 × 15,939.16
  4. Step 4: Simplify right side
    29,367.91x = 645,978,478.11
  5. Step 5: Solve for x
    x = 645,978,478.11/29,367.91
  6. Step 6: Final answer
    x = 21,996.07

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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.