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Finding the Fourth Proportional to 18,657.88, 27,994.11 and 6,972.01

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Solution

The fourth proportional to 18,657.88, 27,994.11 and 6,972.01 is: 10,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.88 : 27,994.11 = 6,972.01 : x
  2. Step 2: Convert to fraction form
    18,657.88/27,994.11 = 6,972.01/x
  3. Step 3: Cross multiply
    18,657.88x = 27,994.11 × 6,972.01
  4. Step 4: Simplify right side
    18,657.88x = 195,175,214.86
  5. Step 5: Solve for x
    x = 195,175,214.86/18,657.88
  6. Step 6: Final answer
    x = 10,460.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.