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Finding the Fourth Proportional to 66,394.59, 99,591.52 and 38,296.43

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Solution

The fourth proportional to 66,394.59, 99,591.52 and 38,296.43 is: 57,444.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.59 : 99,591.52 = 38,296.43 : x
  2. Step 2: Convert to fraction form
    66,394.59/99,591.52 = 38,296.43/x
  3. Step 3: Cross multiply
    66,394.59x = 99,591.52 × 38,296.43
  4. Step 4: Simplify right side
    66,394.59x = 3,813,999,674.27
  5. Step 5: Solve for x
    x = 3,813,999,674.27/66,394.59
  6. Step 6: Final answer
    x = 57,444.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.