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Finding the Fourth Proportional to 66,591.21, 91,897.54 and 36,376.83

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Solution

The fourth proportional to 66,591.21, 91,897.54 and 36,376.83 is: 50,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,591.21 : 91,897.54 = 36,376.83 : x
  2. Step 2: Convert to fraction form
    66,591.21/91,897.54 = 36,376.83/x
  3. Step 3: Cross multiply
    66,591.21x = 91,897.54 × 36,376.83
  4. Step 4: Simplify right side
    66,591.21x = 3,342,941,099.06
  5. Step 5: Solve for x
    x = 3,342,941,099.06/66,591.21
  6. Step 6: Final answer
    x = 50,200.93

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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.