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Finding the Fourth Proportional to 18,574.66, 25,621.41 and 11,400.76

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Solution

The fourth proportional to 18,574.66, 25,621.41 and 11,400.76 is: 15,725.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.66 : 25,621.41 = 11,400.76 : x
  2. Step 2: Convert to fraction form
    18,574.66/25,621.41 = 11,400.76/x
  3. Step 3: Cross multiply
    18,574.66x = 25,621.41 × 11,400.76
  4. Step 4: Simplify right side
    18,574.66x = 292,103,546.27
  5. Step 5: Solve for x
    x = 292,103,546.27/18,574.66
  6. Step 6: Final answer
    x = 15,725.92

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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.