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Finding the Fourth Proportional to 53,421.80, 80,067.90 and 23,808.20

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Solution

The fourth proportional to 53,421.80, 80,067.90 and 23,808.20 is: 35,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.80 : 80,067.90 = 23,808.20 : x
  2. Step 2: Convert to fraction form
    53,421.80/80,067.90 = 23,808.20/x
  3. Step 3: Cross multiply
    53,421.80x = 80,067.90 × 23,808.20
  4. Step 4: Simplify right side
    53,421.80x = 1,906,272,576.78
  5. Step 5: Solve for x
    x = 1,906,272,576.78/53,421.80
  6. Step 6: Final answer
    x = 35,683.42

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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.