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Finding the Fourth Proportional to 193,355.87, 266,832.70 and 107,320.82

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Solution

The fourth proportional to 193,355.87, 266,832.70 and 107,320.82 is: 148,103.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,355.87 : 266,832.70 = 107,320.82 : x
  2. Step 2: Convert to fraction form
    193,355.87/266,832.70 = 107,320.82/x
  3. Step 3: Cross multiply
    193,355.87x = 266,832.70 × 107,320.82
  4. Step 4: Simplify right side
    193,355.87x = 28,636,702,564.35
  5. Step 5: Solve for x
    x = 28,636,702,564.35/193,355.87
  6. Step 6: Final answer
    x = 148,103.61

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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.