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Finding the Fourth Proportional to 68,098.86, 93,961.62 and 39,791.52

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Solution

The fourth proportional to 68,098.86, 93,961.62 and 39,791.52 is: 54,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,098.86 : 93,961.62 = 39,791.52 : x
  2. Step 2: Convert to fraction form
    68,098.86/93,961.62 = 39,791.52/x
  3. Step 3: Cross multiply
    68,098.86x = 93,961.62 × 39,791.52
  4. Step 4: Simplify right side
    68,098.86x = 3,738,875,681.46
  5. Step 5: Solve for x
    x = 3,738,875,681.46/68,098.86
  6. Step 6: Final answer
    x = 54,903.65

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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.