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Finding the Fourth Proportional to 31,502.99, 43,472.35 and 18,072.99

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Solution

The fourth proportional to 31,502.99, 43,472.35 and 18,072.99 is: 24,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,502.99 : 43,472.35 = 18,072.99 : x
  2. Step 2: Convert to fraction form
    31,502.99/43,472.35 = 18,072.99/x
  3. Step 3: Cross multiply
    31,502.99x = 43,472.35 × 18,072.99
  4. Step 4: Simplify right side
    31,502.99x = 785,675,369.42
  5. Step 5: Solve for x
    x = 785,675,369.42/31,502.99
  6. Step 6: Final answer
    x = 24,939.71

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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.