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Finding the Fourth Proportional to 62,729.94, 86,530.77 and 40,373.94

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Solution

The fourth proportional to 62,729.94, 86,530.77 and 40,373.94 is: 55,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,729.94 : 86,530.77 = 40,373.94 : x
  2. Step 2: Convert to fraction form
    62,729.94/86,530.77 = 40,373.94/x
  3. Step 3: Cross multiply
    62,729.94x = 86,530.77 × 40,373.94
  4. Step 4: Simplify right side
    62,729.94x = 3,493,588,116.13
  5. Step 5: Solve for x
    x = 3,493,588,116.13/62,729.94
  6. Step 6: Final answer
    x = 55,692.51

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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.