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Finding the Fourth Proportional to 18,802.32, 25,947.20 and 11,248.96

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Solution

The fourth proportional to 18,802.32, 25,947.20 and 11,248.96 is: 15,523.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.32 : 25,947.20 = 11,248.96 : x
  2. Step 2: Convert to fraction form
    18,802.32/25,947.20 = 11,248.96/x
  3. Step 3: Cross multiply
    18,802.32x = 25,947.20 × 11,248.96
  4. Step 4: Simplify right side
    18,802.32x = 291,878,991.10
  5. Step 5: Solve for x
    x = 291,878,991.10/18,802.32
  6. Step 6: Final answer
    x = 15,523.56

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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.