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Finding the Fourth Proportional to 19,611.92, 29,422.74 and 5,760.92

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Solution

The fourth proportional to 19,611.92, 29,422.74 and 5,760.92 is: 8,642.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.92 : 29,422.74 = 5,760.92 : x
  2. Step 2: Convert to fraction form
    19,611.92/29,422.74 = 5,760.92/x
  3. Step 3: Cross multiply
    19,611.92x = 29,422.74 × 5,760.92
  4. Step 4: Simplify right side
    19,611.92x = 169,502,051.32
  5. Step 5: Solve for x
    x = 169,502,051.32/19,611.92
  6. Step 6: Final answer
    x = 8,642.81

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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.