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Finding the Fourth Proportional to 18,609.90, 25,680.32 and 10,541.24

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Solution

The fourth proportional to 18,609.90, 25,680.32 and 10,541.24 is: 14,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.90 : 25,680.32 = 10,541.24 : x
  2. Step 2: Convert to fraction form
    18,609.90/25,680.32 = 10,541.24/x
  3. Step 3: Cross multiply
    18,609.90x = 25,680.32 × 10,541.24
  4. Step 4: Simplify right side
    18,609.90x = 270,702,416.40
  5. Step 5: Solve for x
    x = 270,702,416.40/18,609.90
  6. Step 6: Final answer
    x = 14,546.15

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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.