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Finding the Fourth Proportional to 4,886.81, 7,330.22 and 1,964.43

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Solution

The fourth proportional to 4,886.81, 7,330.22 and 1,964.43 is: 2,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.81 : 7,330.22 = 1,964.43 : x
  2. Step 2: Convert to fraction form
    4,886.81/7,330.22 = 1,964.43/x
  3. Step 3: Cross multiply
    4,886.81x = 7,330.22 × 1,964.43
  4. Step 4: Simplify right side
    4,886.81x = 14,399,717.49
  5. Step 5: Solve for x
    x = 14,399,717.49/4,886.81
  6. Step 6: Final answer
    x = 2,946.65

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Double scale
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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.