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Finding the Fourth Proportional to 19,866.42, 27,410.22 and 12,796.92

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Solution

The fourth proportional to 19,866.42, 27,410.22 and 12,796.92 is: 17,656.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.42 : 27,410.22 = 12,796.92 : x
  2. Step 2: Convert to fraction form
    19,866.42/27,410.22 = 12,796.92/x
  3. Step 3: Cross multiply
    19,866.42x = 27,410.22 × 12,796.92
  4. Step 4: Simplify right side
    19,866.42x = 350,766,392.52
  5. Step 5: Solve for x
    x = 350,766,392.52/19,866.42
  6. Step 6: Final answer
    x = 17,656.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.