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Finding the Fourth Proportional to 18,613.79, 27,922.04 and 6,927

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Solution

The fourth proportional to 18,613.79, 27,922.04 and 6,927 is: 10,391.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.79 : 27,922.04 = 6,927 : x
  2. Step 2: Convert to fraction form
    18,613.79/27,922.04 = 6,927/x
  3. Step 3: Cross multiply
    18,613.79x = 27,922.04 × 6,927
  4. Step 4: Simplify right side
    18,613.79x = 193,415,936.45
  5. Step 5: Solve for x
    x = 193,415,936.45/18,613.79
  6. Step 6: Final answer
    x = 10,391.01

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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.