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Finding the Fourth Proportional to 18,647.84, 25,731.74 and 11,094.50

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Solution

The fourth proportional to 18,647.84, 25,731.74 and 11,094.50 is: 15,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.84 : 25,731.74 = 11,094.50 : x
  2. Step 2: Convert to fraction form
    18,647.84/25,731.74 = 11,094.50/x
  3. Step 3: Cross multiply
    18,647.84x = 25,731.74 × 11,094.50
  4. Step 4: Simplify right side
    18,647.84x = 285,480,881.50
  5. Step 5: Solve for x
    x = 285,480,881.50/18,647.84
  6. Step 6: Final answer
    x = 15,309.06

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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.