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Finding the Fourth Proportional to 111,674.31, 154,111.17 and 60,687.46

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Solution

The fourth proportional to 111,674.31, 154,111.17 and 60,687.46 is: 83,749.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,674.31 : 154,111.17 = 60,687.46 : x
  2. Step 2: Convert to fraction form
    111,674.31/154,111.17 = 60,687.46/x
  3. Step 3: Cross multiply
    111,674.31x = 154,111.17 × 60,687.46
  4. Step 4: Simplify right side
    111,674.31x = 9,352,615,464.93
  5. Step 5: Solve for x
    x = 9,352,615,464.93/111,674.31
  6. Step 6: Final answer
    x = 83,749.03

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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.