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Finding the Fourth Proportional to 18,662.72, 25,743.15 and 17,417.16

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Solution

The fourth proportional to 18,662.72, 25,743.15 and 17,417.16 is: 24,025.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.72 : 25,743.15 = 17,417.16 : x
  2. Step 2: Convert to fraction form
    18,662.72/25,743.15 = 17,417.16/x
  3. Step 3: Cross multiply
    18,662.72x = 25,743.15 × 17,417.16
  4. Step 4: Simplify right side
    18,662.72x = 448,372,581.63
  5. Step 5: Solve for x
    x = 448,372,581.63/18,662.72
  6. Step 6: Final answer
    x = 24,025.04

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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.