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Finding the Fourth Proportional to 101,468.89, 140,017.53 and 68,696.64

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Solution

The fourth proportional to 101,468.89, 140,017.53 and 68,696.64 is: 94,794.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,468.89 : 140,017.53 = 68,696.64 : x
  2. Step 2: Convert to fraction form
    101,468.89/140,017.53 = 68,696.64/x
  3. Step 3: Cross multiply
    101,468.89x = 140,017.53 × 68,696.64
  4. Step 4: Simplify right side
    101,468.89x = 9,618,734,109.71
  5. Step 5: Solve for x
    x = 9,618,734,109.71/101,468.89
  6. Step 6: Final answer
    x = 94,794.91

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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.