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Finding the Fourth Proportional to 193,398.72, 266,890.59 and 108,515.58

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Solution

The fourth proportional to 193,398.72, 266,890.59 and 108,515.58 is: 149,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,398.72 : 266,890.59 = 108,515.58 : x
  2. Step 2: Convert to fraction form
    193,398.72/266,890.59 = 108,515.58/x
  3. Step 3: Cross multiply
    193,398.72x = 266,890.59 × 108,515.58
  4. Step 4: Simplify right side
    193,398.72x = 28,961,787,170.39
  5. Step 5: Solve for x
    x = 28,961,787,170.39/193,398.72
  6. Step 6: Final answer
    x = 149,751.70

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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.