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Finding the Fourth Proportional to 111,846.81, 154,348.60 and 61,545.81

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Solution

The fourth proportional to 111,846.81, 154,348.60 and 61,545.81 is: 84,933.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,846.81 : 154,348.60 = 61,545.81 : x
  2. Step 2: Convert to fraction form
    111,846.81/154,348.60 = 61,545.81/x
  3. Step 3: Cross multiply
    111,846.81x = 154,348.60 × 61,545.81
  4. Step 4: Simplify right side
    111,846.81x = 9,499,509,609.37
  5. Step 5: Solve for x
    x = 9,499,509,609.37/111,846.81
  6. Step 6: Final answer
    x = 84,933.22

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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.