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Finding the Fourth Proportional to 19,391.84, 29,086.13 and 7,701.92

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Solution

The fourth proportional to 19,391.84, 29,086.13 and 7,701.92 is: 11,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.84 : 29,086.13 = 7,701.92 : x
  2. Step 2: Convert to fraction form
    19,391.84/29,086.13 = 7,701.92/x
  3. Step 3: Cross multiply
    19,391.84x = 29,086.13 × 7,701.92
  4. Step 4: Simplify right side
    19,391.84x = 224,019,046.37
  5. Step 5: Solve for x
    x = 224,019,046.37/19,391.84
  6. Step 6: Final answer
    x = 11,552.23

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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.