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Finding the Fourth Proportional to 111,757.62, 154,222.47 and 61,456.62

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Solution

The fourth proportional to 111,757.62, 154,222.47 and 61,456.62 is: 84,808.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,757.62 : 154,222.47 = 61,456.62 : x
  2. Step 2: Convert to fraction form
    111,757.62/154,222.47 = 61,456.62/x
  3. Step 3: Cross multiply
    111,757.62x = 154,222.47 × 61,456.62
  4. Step 4: Simplify right side
    111,757.62x = 9,477,991,734.25
  5. Step 5: Solve for x
    x = 9,477,991,734.25/111,757.62
  6. Step 6: Final answer
    x = 84,808.46

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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.