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Finding the Fourth Proportional to 18,683.54, 25,781.73 and 10,724.08

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Solution

The fourth proportional to 18,683.54, 25,781.73 and 10,724.08 is: 14,798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.54 : 25,781.73 = 10,724.08 : x
  2. Step 2: Convert to fraction form
    18,683.54/25,781.73 = 10,724.08/x
  3. Step 3: Cross multiply
    18,683.54x = 25,781.73 × 10,724.08
  4. Step 4: Simplify right side
    18,683.54x = 276,485,335.06
  5. Step 5: Solve for x
    x = 276,485,335.06/18,683.54
  6. Step 6: Final answer
    x = 14,798.34

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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.