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Finding the Fourth Proportional to 7,908.75, 11,865.20 and 2,714.67

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Solution

The fourth proportional to 7,908.75, 11,865.20 and 2,714.67 is: 4,072.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.75 : 11,865.20 = 2,714.67 : x
  2. Step 2: Convert to fraction form
    7,908.75/11,865.20 = 2,714.67/x
  3. Step 3: Cross multiply
    7,908.75x = 11,865.20 × 2,714.67
  4. Step 4: Simplify right side
    7,908.75x = 32,210,088.91
  5. Step 5: Solve for x
    x = 32,210,088.91/7,908.75
  6. Step 6: Final answer
    x = 4,072.72

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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.