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Finding the Fourth Proportional to 66,190.48, 91,343.79 and 35,975.79

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Solution

The fourth proportional to 66,190.48, 91,343.79 and 35,975.79 is: 49,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.48 : 91,343.79 = 35,975.79 : x
  2. Step 2: Convert to fraction form
    66,190.48/91,343.79 = 35,975.79/x
  3. Step 3: Cross multiply
    66,190.48x = 91,343.79 × 35,975.79
  4. Step 4: Simplify right side
    66,190.48x = 3,286,165,006.84
  5. Step 5: Solve for x
    x = 3,286,165,006.84/66,190.48
  6. Step 6: Final answer
    x = 49,647.09

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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.