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Finding the Fourth Proportional to 66,241.13, 91,411.87 and 36,025.80

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Solution

The fourth proportional to 66,241.13, 91,411.87 and 36,025.80 is: 49,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,241.13 : 91,411.87 = 36,025.80 : x
  2. Step 2: Convert to fraction form
    66,241.13/91,411.87 = 36,025.80/x
  3. Step 3: Cross multiply
    66,241.13x = 91,411.87 × 36,025.80
  4. Step 4: Simplify right side
    66,241.13x = 3,293,185,566.12
  5. Step 5: Solve for x
    x = 3,293,185,566.12/66,241.13
  6. Step 6: Final answer
    x = 49,715.12

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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.