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Finding the Fourth Proportional to 15,956.64, 23,919.30 and 8,940.02

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Solution

The fourth proportional to 15,956.64, 23,919.30 and 8,940.02 is: 13,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,956.64 : 23,919.30 = 8,940.02 : x
  2. Step 2: Convert to fraction form
    15,956.64/23,919.30 = 8,940.02/x
  3. Step 3: Cross multiply
    15,956.64x = 23,919.30 × 8,940.02
  4. Step 4: Simplify right side
    15,956.64x = 213,838,900.79
  5. Step 5: Solve for x
    x = 213,838,900.79/15,956.64
  6. Step 6: Final answer
    x = 13,401.25

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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.