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Finding the Fourth Proportional to 66,861, 92,268.18 and 38,570.94

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Solution

The fourth proportional to 66,861, 92,268.18 and 38,570.94 is: 53,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,861 : 92,268.18 = 38,570.94 : x
  2. Step 2: Convert to fraction form
    66,861/92,268.18 = 38,570.94/x
  3. Step 3: Cross multiply
    66,861x = 92,268.18 × 38,570.94
  4. Step 4: Simplify right side
    66,861x = 3,558,870,434.69
  5. Step 5: Solve for x
    x = 3,558,870,434.69/66,861
  6. Step 6: Final answer
    x = 53,227.90

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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.