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Finding the Fourth Proportional to 67,971.88, 93,794.28 and 39,693.94

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Solution

The fourth proportional to 67,971.88, 93,794.28 and 39,693.94 is: 54,773.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,971.88 : 93,794.28 = 39,693.94 : x
  2. Step 2: Convert to fraction form
    67,971.88/93,794.28 = 39,693.94/x
  3. Step 3: Cross multiply
    67,971.88x = 93,794.28 × 39,693.94
  4. Step 4: Simplify right side
    67,971.88x = 3,723,064,522.66
  5. Step 5: Solve for x
    x = 3,723,064,522.66/67,971.88
  6. Step 6: Final answer
    x = 54,773.60

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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.