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Finding the Fourth Proportional to 66,493.26, 91,764.22 and 38,200.76

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Solution

The fourth proportional to 66,493.26, 91,764.22 and 38,200.76 is: 52,719.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,493.26 : 91,764.22 = 38,200.76 : x
  2. Step 2: Convert to fraction form
    66,493.26/91,764.22 = 38,200.76/x
  3. Step 3: Cross multiply
    66,493.26x = 91,764.22 × 38,200.76
  4. Step 4: Simplify right side
    66,493.26x = 3,505,462,944.81
  5. Step 5: Solve for x
    x = 3,505,462,944.81/66,493.26
  6. Step 6: Final answer
    x = 52,719.07

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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.