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Finding the Fourth Proportional to 7,953.76, 11,930.67 and 2,759.64

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Solution

The fourth proportional to 7,953.76, 11,930.67 and 2,759.64 is: 4,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,953.76 : 11,930.67 = 2,759.64 : x
  2. Step 2: Convert to fraction form
    7,953.76/11,930.67 = 2,759.64/x
  3. Step 3: Cross multiply
    7,953.76x = 11,930.67 × 2,759.64
  4. Step 4: Simplify right side
    7,953.76x = 32,924,354.16
  5. Step 5: Solve for x
    x = 32,924,354.16/7,953.76
  6. Step 6: Final answer
    x = 4,139.47

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Similar ratio
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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.