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Finding the Fourth Proportional to 38,309.91, 57,465.48 and 12,014.88

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Solution

The fourth proportional to 38,309.91, 57,465.48 and 12,014.88 is: 18,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,309.91 : 57,465.48 = 12,014.88 : x
  2. Step 2: Convert to fraction form
    38,309.91/57,465.48 = 12,014.88/x
  3. Step 3: Cross multiply
    38,309.91x = 57,465.48 × 12,014.88
  4. Step 4: Simplify right side
    38,309.91x = 690,440,846.34
  5. Step 5: Solve for x
    x = 690,440,846.34/38,309.91
  6. Step 6: Final answer
    x = 18,022.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.