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Finding the Fourth Proportional to 18,666.92, 25,758.47 and 11,495.68

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Solution

The fourth proportional to 18,666.92, 25,758.47 and 11,495.68 is: 15,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.92 : 25,758.47 = 11,495.68 : x
  2. Step 2: Convert to fraction form
    18,666.92/25,758.47 = 11,495.68/x
  3. Step 3: Cross multiply
    18,666.92x = 25,758.47 × 11,495.68
  4. Step 4: Simplify right side
    18,666.92x = 296,111,006.54
  5. Step 5: Solve for x
    x = 296,111,006.54/18,666.92
  6. Step 6: Final answer
    x = 15,862.88

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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.