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Finding the Fourth Proportional to 111,696.21, 154,141.95 and 60,708.94

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Solution

The fourth proportional to 111,696.21, 154,141.95 and 60,708.94 is: 83,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,696.21 : 154,141.95 = 60,708.94 : x
  2. Step 2: Convert to fraction form
    111,696.21/154,141.95 = 60,708.94/x
  3. Step 3: Cross multiply
    111,696.21x = 154,141.95 × 60,708.94
  4. Step 4: Simplify right side
    111,696.21x = 9,357,794,394.03
  5. Step 5: Solve for x
    x = 9,357,794,394.03/111,696.21
  6. Step 6: Final answer
    x = 83,778.98

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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.