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Finding the Fourth Proportional to 18,600.56, 25,668.72 and 11,148.56

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Solution

The fourth proportional to 18,600.56, 25,668.72 and 11,148.56 is: 15,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.56 : 25,668.72 = 11,148.56 : x
  2. Step 2: Convert to fraction form
    18,600.56/25,668.72 = 11,148.56/x
  3. Step 3: Cross multiply
    18,600.56x = 25,668.72 × 11,148.56
  4. Step 4: Simplify right side
    18,600.56x = 286,169,265.04
  5. Step 5: Solve for x
    x = 286,169,265.04/18,600.56
  6. Step 6: Final answer
    x = 15,384.98

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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.