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Finding the Fourth Proportional to 18,642.44, 27,964.92 and 6,955.64

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Solution

The fourth proportional to 18,642.44, 27,964.92 and 6,955.64 is: 10,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.44 : 27,964.92 = 6,955.64 : x
  2. Step 2: Convert to fraction form
    18,642.44/27,964.92 = 6,955.64/x
  3. Step 3: Cross multiply
    18,642.44x = 27,964.92 × 6,955.64
  4. Step 4: Simplify right side
    18,642.44x = 194,513,916.15
  5. Step 5: Solve for x
    x = 194,513,916.15/18,642.44
  6. Step 6: Final answer
    x = 10,433.93

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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.