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Finding the Fourth Proportional to 65,896.08, 90,936.42 and 35,681.40

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Solution

The fourth proportional to 65,896.08, 90,936.42 and 35,681.40 is: 49,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,896.08 : 90,936.42 = 35,681.40 : x
  2. Step 2: Convert to fraction form
    65,896.08/90,936.42 = 35,681.40/x
  3. Step 3: Cross multiply
    65,896.08x = 90,936.42 × 35,681.40
  4. Step 4: Simplify right side
    65,896.08x = 3,244,738,776.59
  5. Step 5: Solve for x
    x = 3,244,738,776.59/65,896.08
  6. Step 6: Final answer
    x = 49,240.24

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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.