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Finding the Fourth Proportional to 18,470.56, 25,483.36 and 10,917.12

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Solution

The fourth proportional to 18,470.56, 25,483.36 and 10,917.12 is: 15,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.56 : 25,483.36 = 10,917.12 : x
  2. Step 2: Convert to fraction form
    18,470.56/25,483.36 = 10,917.12/x
  3. Step 3: Cross multiply
    18,470.56x = 25,483.36 × 10,917.12
  4. Step 4: Simplify right side
    18,470.56x = 278,204,899.12
  5. Step 5: Solve for x
    x = 278,204,899.12/18,470.56
  6. Step 6: Final answer
    x = 15,062.07

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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.