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Finding the Fourth Proportional to 111,801.96, 154,288.53 and 60,815.70

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Solution

The fourth proportional to 111,801.96, 154,288.53 and 60,815.70 is: 83,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,801.96 : 154,288.53 = 60,815.70 : x
  2. Step 2: Convert to fraction form
    111,801.96/154,288.53 = 60,815.70/x
  3. Step 3: Cross multiply
    111,801.96x = 154,288.53 × 60,815.70
  4. Step 4: Simplify right side
    111,801.96x = 9,383,164,953.92
  5. Step 5: Solve for x
    x = 9,383,164,953.92/111,801.96
  6. Step 6: Final answer
    x = 83,926.66

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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.