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Finding the Fourth Proportional to 61,399.80, 91,935.63 and 39,092.40

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Solution

The fourth proportional to 61,399.80, 91,935.63 and 39,092.40 is: 58,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,399.80 : 91,935.63 = 39,092.40 : x
  2. Step 2: Convert to fraction form
    61,399.80/91,935.63 = 39,092.40/x
  3. Step 3: Cross multiply
    61,399.80x = 91,935.63 × 39,092.40
  4. Step 4: Simplify right side
    61,399.80x = 3,593,984,422.21
  5. Step 5: Solve for x
    x = 3,593,984,422.21/61,399.80
  6. Step 6: Final answer
    x = 58,534.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.