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Finding the Fourth Proportional to 18,807.59, 25,936.56 and 11,252.72

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Solution

The fourth proportional to 18,807.59, 25,936.56 and 11,252.72 is: 15,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.59 : 25,936.56 = 11,252.72 : x
  2. Step 2: Convert to fraction form
    18,807.59/25,936.56 = 11,252.72/x
  3. Step 3: Cross multiply
    18,807.59x = 25,936.56 × 11,252.72
  4. Step 4: Simplify right side
    18,807.59x = 291,856,717.76
  5. Step 5: Solve for x
    x = 291,856,717.76/18,807.59
  6. Step 6: Final answer
    x = 15,518.03

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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.