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Finding the Fourth Proportional to 66,114.78, 91,238.34 and 36,306.78

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Solution

The fourth proportional to 66,114.78, 91,238.34 and 36,306.78 is: 50,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,114.78 : 91,238.34 = 36,306.78 : x
  2. Step 2: Convert to fraction form
    66,114.78/91,238.34 = 36,306.78/x
  3. Step 3: Cross multiply
    66,114.78x = 91,238.34 × 36,306.78
  4. Step 4: Simplify right side
    66,114.78x = 3,312,570,337.95
  5. Step 5: Solve for x
    x = 3,312,570,337.95/66,114.78
  6. Step 6: Final answer
    x = 50,103.33

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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.