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Finding the Fourth Proportional to 11,808.75, 17,712.53 and 2,924.03

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Solution

The fourth proportional to 11,808.75, 17,712.53 and 2,924.03 is: 4,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.75 : 17,712.53 = 2,924.03 : x
  2. Step 2: Convert to fraction form
    11,808.75/17,712.53 = 2,924.03/x
  3. Step 3: Cross multiply
    11,808.75x = 17,712.53 × 2,924.03
  4. Step 4: Simplify right side
    11,808.75x = 51,791,969.10
  5. Step 5: Solve for x
    x = 51,791,969.10/11,808.75
  6. Step 6: Final answer
    x = 4,385.90

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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.