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Finding the Fourth Proportional to 111,856.64, 154,359.06 and 60,868.20

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Solution

The fourth proportional to 111,856.64, 154,359.06 and 60,868.20 is: 83,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.64 : 154,359.06 = 60,868.20 : x
  2. Step 2: Convert to fraction form
    111,856.64/154,359.06 = 60,868.20/x
  3. Step 3: Cross multiply
    111,856.64x = 154,359.06 × 60,868.20
  4. Step 4: Simplify right side
    111,856.64x = 9,395,558,135.89
  5. Step 5: Solve for x
    x = 9,395,558,135.89/111,856.64
  6. Step 6: Final answer
    x = 83,996.43

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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.