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Finding the Fourth Proportional to 111,166.44, 153,424.98 and 68,171.64

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Solution

The fourth proportional to 111,166.44, 153,424.98 and 68,171.64 is: 94,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,166.44 : 153,424.98 = 68,171.64 : x
  2. Step 2: Convert to fraction form
    111,166.44/153,424.98 = 68,171.64/x
  3. Step 3: Cross multiply
    111,166.44x = 153,424.98 × 68,171.64
  4. Step 4: Simplify right side
    111,166.44x = 10,459,232,503.57
  5. Step 5: Solve for x
    x = 10,459,232,503.57/111,166.44
  6. Step 6: Final answer
    x = 94,086.24

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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.