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Finding the Fourth Proportional to 111,860.33, 154,367.28 and 61,559.33

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Solution

The fourth proportional to 111,860.33, 154,367.28 and 61,559.33 is: 84,951.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,860.33 : 154,367.28 = 61,559.33 : x
  2. Step 2: Convert to fraction form
    111,860.33/154,367.28 = 61,559.33/x
  3. Step 3: Cross multiply
    111,860.33x = 154,367.28 × 61,559.33
  4. Step 4: Simplify right side
    111,860.33x = 9,502,746,330.72
  5. Step 5: Solve for x
    x = 9,502,746,330.72/111,860.33
  6. Step 6: Final answer
    x = 84,951.89

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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.