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Finding the Fourth Proportional to 66,178.69, 91,326.59 and 36,370.69

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Solution

The fourth proportional to 66,178.69, 91,326.59 and 36,370.69 is: 50,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,178.69 : 91,326.59 = 36,370.69 : x
  2. Step 2: Convert to fraction form
    66,178.69/91,326.59 = 36,370.69/x
  3. Step 3: Cross multiply
    66,178.69x = 91,326.59 × 36,370.69
  4. Step 4: Simplify right side
    66,178.69x = 3,321,610,819.87
  5. Step 5: Solve for x
    x = 3,321,610,819.87/66,178.69
  6. Step 6: Final answer
    x = 50,191.55

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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.