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Finding the Fourth Proportional to 11,994.67, 17,991.84 and 5,416.25

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Solution

The fourth proportional to 11,994.67, 17,991.84 and 5,416.25 is: 8,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,994.67 : 17,991.84 = 5,416.25 : x
  2. Step 2: Convert to fraction form
    11,994.67/17,991.84 = 5,416.25/x
  3. Step 3: Cross multiply
    11,994.67x = 17,991.84 × 5,416.25
  4. Step 4: Simplify right side
    11,994.67x = 97,448,303.40
  5. Step 5: Solve for x
    x = 97,448,303.40/11,994.67
  6. Step 6: Final answer
    x = 8,124.30

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1.5x scale

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.