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Finding the Fourth Proportional to 57,233.78, 85,862.95 and 19,286.80

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Solution

The fourth proportional to 57,233.78, 85,862.95 and 19,286.80 is: 28,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,233.78 : 85,862.95 = 19,286.80 : x
  2. Step 2: Convert to fraction form
    57,233.78/85,862.95 = 19,286.80/x
  3. Step 3: Cross multiply
    57,233.78x = 85,862.95 × 19,286.80
  4. Step 4: Simplify right side
    57,233.78x = 1,656,021,544.06
  5. Step 5: Solve for x
    x = 1,656,021,544.06/57,233.78
  6. Step 6: Final answer
    x = 28,934.34

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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.