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Finding the Fourth Proportional to 111,906.48, 154,425.16 and 61,595.76

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Solution

The fourth proportional to 111,906.48, 154,425.16 and 61,595.76 is: 84,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,906.48 : 154,425.16 = 61,595.76 : x
  2. Step 2: Convert to fraction form
    111,906.48/154,425.16 = 61,595.76/x
  3. Step 3: Cross multiply
    111,906.48x = 154,425.16 × 61,595.76
  4. Step 4: Simplify right side
    111,906.48x = 9,511,935,093.32
  5. Step 5: Solve for x
    x = 9,511,935,093.32/111,906.48
  6. Step 6: Final answer
    x = 84,998.97

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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.