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Finding the Fourth Proportional to 19,763.48, 29,645.22 and 7,922.64

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Solution

The fourth proportional to 19,763.48, 29,645.22 and 7,922.64 is: 11,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,763.48 : 29,645.22 = 7,922.64 : x
  2. Step 2: Convert to fraction form
    19,763.48/29,645.22 = 7,922.64/x
  3. Step 3: Cross multiply
    19,763.48x = 29,645.22 × 7,922.64
  4. Step 4: Simplify right side
    19,763.48x = 234,868,405.78
  5. Step 5: Solve for x
    x = 234,868,405.78/19,763.48
  6. Step 6: Final answer
    x = 11,883.96

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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.