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Finding the Fourth Proportional to 7,877.79, 11,816.80 and 1,954.69

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Solution

The fourth proportional to 7,877.79, 11,816.80 and 1,954.69 is: 2,932.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.79 : 11,816.80 = 1,954.69 : x
  2. Step 2: Convert to fraction form
    7,877.79/11,816.80 = 1,954.69/x
  3. Step 3: Cross multiply
    7,877.79x = 11,816.80 × 1,954.69
  4. Step 4: Simplify right side
    7,877.79x = 23,098,146.36
  5. Step 5: Solve for x
    x = 23,098,146.36/7,877.79
  6. Step 6: Final answer
    x = 2,932.06

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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.