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Finding the Fourth Proportional to 18,617.76, 25,693.72 and 11,548.88

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Solution

The fourth proportional to 18,617.76, 25,693.72 and 11,548.88 is: 15,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.76 : 25,693.72 = 11,548.88 : x
  2. Step 2: Convert to fraction form
    18,617.76/25,693.72 = 11,548.88/x
  3. Step 3: Cross multiply
    18,617.76x = 25,693.72 × 11,548.88
  4. Step 4: Simplify right side
    18,617.76x = 296,733,689.03
  5. Step 5: Solve for x
    x = 296,733,689.03/18,617.76
  6. Step 6: Final answer
    x = 15,938.21

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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.