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Finding the Fourth Proportional to 68,963.94, 103,372.29 and 39,317.94

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Solution

The fourth proportional to 68,963.94, 103,372.29 and 39,317.94 is: 58,934.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,963.94 : 103,372.29 = 39,317.94 : x
  2. Step 2: Convert to fraction form
    68,963.94/103,372.29 = 39,317.94/x
  3. Step 3: Cross multiply
    68,963.94x = 103,372.29 × 39,317.94
  4. Step 4: Simplify right side
    68,963.94x = 4,064,385,495.88
  5. Step 5: Solve for x
    x = 4,064,385,495.88/68,963.94
  6. Step 6: Final answer
    x = 58,934.94

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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.