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Finding the Fourth Proportional to 65,935.81, 90,969.04 and 37,251.28

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Solution

The fourth proportional to 65,935.81, 90,969.04 and 37,251.28 is: 51,394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,935.81 : 90,969.04 = 37,251.28 : x
  2. Step 2: Convert to fraction form
    65,935.81/90,969.04 = 37,251.28/x
  3. Step 3: Cross multiply
    65,935.81x = 90,969.04 × 37,251.28
  4. Step 4: Simplify right side
    65,935.81x = 3,388,713,180.37
  5. Step 5: Solve for x
    x = 3,388,713,180.37/65,935.81
  6. Step 6: Final answer
    x = 51,394.12

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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.