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Finding the Fourth Proportional to 18,252.54, 25,138.08 and 15,733.68

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Solution

The fourth proportional to 18,252.54, 25,138.08 and 15,733.68 is: 21,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,252.54 : 25,138.08 = 15,733.68 : x
  2. Step 2: Convert to fraction form
    18,252.54/25,138.08 = 15,733.68/x
  3. Step 3: Cross multiply
    18,252.54x = 25,138.08 × 15,733.68
  4. Step 4: Simplify right side
    18,252.54x = 395,514,506.53
  5. Step 5: Solve for x
    x = 395,514,506.53/18,252.54
  6. Step 6: Final answer
    x = 21,669.01

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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.