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Finding the Fourth Proportional to 19,863.15, 29,794.70 and 5,072.08

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Solution

The fourth proportional to 19,863.15, 29,794.70 and 5,072.08 is: 7,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.15 : 29,794.70 = 5,072.08 : x
  2. Step 2: Convert to fraction form
    19,863.15/29,794.70 = 5,072.08/x
  3. Step 3: Cross multiply
    19,863.15x = 29,794.70 × 5,072.08
  4. Step 4: Simplify right side
    19,863.15x = 151,121,002.13
  5. Step 5: Solve for x
    x = 151,121,002.13/19,863.15
  6. Step 6: Final answer
    x = 7,608.11

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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.