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Finding the Fourth Proportional to 9,311.10, 13,960.16 and 4,376

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Solution

The fourth proportional to 9,311.10, 13,960.16 and 4,376 is: 6,560.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.10 : 13,960.16 = 4,376 : x
  2. Step 2: Convert to fraction form
    9,311.10/13,960.16 = 4,376/x
  3. Step 3: Cross multiply
    9,311.10x = 13,960.16 × 4,376
  4. Step 4: Simplify right side
    9,311.10x = 61,089,660.16
  5. Step 5: Solve for x
    x = 61,089,660.16/9,311.10
  6. Step 6: Final answer
    x = 6,560.95

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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.