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Finding the Fourth Proportional to 19,815.13, 29,701.74 and 7,327.13

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Solution

The fourth proportional to 19,815.13, 29,701.74 and 7,327.13 is: 10,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.13 : 29,701.74 = 7,327.13 : x
  2. Step 2: Convert to fraction form
    19,815.13/29,701.74 = 7,327.13/x
  3. Step 3: Cross multiply
    19,815.13x = 29,701.74 × 7,327.13
  4. Step 4: Simplify right side
    19,815.13x = 217,628,510.21
  5. Step 5: Solve for x
    x = 217,628,510.21/19,815.13
  6. Step 6: Final answer
    x = 10,982.95

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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.