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Finding the Fourth Proportional to 9,995.88, 14,991.20 and 2,974

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Solution

The fourth proportional to 9,995.88, 14,991.20 and 2,974 is: 4,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,995.88 : 14,991.20 = 2,974 : x
  2. Step 2: Convert to fraction form
    9,995.88/14,991.20 = 2,974/x
  3. Step 3: Cross multiply
    9,995.88x = 14,991.20 × 2,974
  4. Step 4: Simplify right side
    9,995.88x = 44,583,828.80
  5. Step 5: Solve for x
    x = 44,583,828.80/9,995.88
  6. Step 6: Final answer
    x = 4,460.22

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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.