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Finding the Fourth Proportional to 91,072.97, 125,680.71 and 53,347.22

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Solution

The fourth proportional to 91,072.97, 125,680.71 and 53,347.22 is: 73,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,072.97 : 125,680.71 = 53,347.22 : x
  2. Step 2: Convert to fraction form
    91,072.97/125,680.71 = 53,347.22/x
  3. Step 3: Cross multiply
    91,072.97x = 125,680.71 × 53,347.22
  4. Step 4: Simplify right side
    91,072.97x = 6,704,715,857.72
  5. Step 5: Solve for x
    x = 6,704,715,857.72/91,072.97
  6. Step 6: Final answer
    x = 73,619.17

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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.