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Finding the Fourth Proportional to 67,196.68, 92,726.64 and 39,971.26

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Solution

The fourth proportional to 67,196.68, 92,726.64 and 39,971.26 is: 55,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,196.68 : 92,726.64 = 39,971.26 : x
  2. Step 2: Convert to fraction form
    67,196.68/92,726.64 = 39,971.26/x
  3. Step 3: Cross multiply
    67,196.68x = 92,726.64 × 39,971.26
  4. Step 4: Simplify right side
    67,196.68x = 3,706,400,453.25
  5. Step 5: Solve for x
    x = 3,706,400,453.25/67,196.68
  6. Step 6: Final answer
    x = 55,157.50

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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.