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Finding the Fourth Proportional to 27,957, 38,561.13 and 18,393.87

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Solution

The fourth proportional to 27,957, 38,561.13 and 18,393.87 is: 25,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957 : 38,561.13 = 18,393.87 : x
  2. Step 2: Convert to fraction form
    27,957/38,561.13 = 18,393.87/x
  3. Step 3: Cross multiply
    27,957x = 38,561.13 × 18,393.87
  4. Step 4: Simplify right side
    27,957x = 709,288,412.27
  5. Step 5: Solve for x
    x = 709,288,412.27/27,957
  6. Step 6: Final answer
    x = 25,370.69

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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.