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Finding the Fourth Proportional to 66,167.78, 91,311.90 and 35,953.34

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Solution

The fourth proportional to 66,167.78, 91,311.90 and 35,953.34 is: 49,615.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,167.78 : 91,311.90 = 35,953.34 : x
  2. Step 2: Convert to fraction form
    66,167.78/91,311.90 = 35,953.34/x
  3. Step 3: Cross multiply
    66,167.78x = 91,311.90 × 35,953.34
  4. Step 4: Simplify right side
    66,167.78x = 3,282,967,786.75
  5. Step 5: Solve for x
    x = 3,282,967,786.75/66,167.78
  6. Step 6: Final answer
    x = 49,615.81

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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.