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Finding the Fourth Proportional to 103,796.91, 155,708.57 and 40,608.95

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Solution

The fourth proportional to 103,796.91, 155,708.57 and 40,608.95 is: 60,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,796.91 : 155,708.57 = 40,608.95 : x
  2. Step 2: Convert to fraction form
    103,796.91/155,708.57 = 40,608.95/x
  3. Step 3: Cross multiply
    103,796.91x = 155,708.57 × 40,608.95
  4. Step 4: Simplify right side
    103,796.91x = 6,323,160,552.11
  5. Step 5: Solve for x
    x = 6,323,160,552.11/103,796.91
  6. Step 6: Final answer
    x = 60,918.58

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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.