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Finding the Fourth Proportional to 66,208.60, 91,367.70 and 35,993.92

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Solution

The fourth proportional to 66,208.60, 91,367.70 and 35,993.92 is: 49,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.60 : 91,367.70 = 35,993.92 : x
  2. Step 2: Convert to fraction form
    66,208.60/91,367.70 = 35,993.92/x
  3. Step 3: Cross multiply
    66,208.60x = 91,367.70 × 35,993.92
  4. Step 4: Simplify right side
    66,208.60x = 3,288,681,684.38
  5. Step 5: Solve for x
    x = 3,288,681,684.38/66,208.60
  6. Step 6: Final answer
    x = 49,671.52

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Double scale
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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.