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Finding the Fourth Proportional to 193,401.84, 266,913.72 and 129,871.92

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Solution

The fourth proportional to 193,401.84, 266,913.72 and 129,871.92 is: 179,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,401.84 : 266,913.72 = 129,871.92 : x
  2. Step 2: Convert to fraction form
    193,401.84/266,913.72 = 129,871.92/x
  3. Step 3: Cross multiply
    193,401.84x = 266,913.72 × 129,871.92
  4. Step 4: Simplify right side
    193,401.84x = 34,664,597,290.74
  5. Step 5: Solve for x
    x = 34,664,597,290.74/193,401.84
  6. Step 6: Final answer
    x = 179,236.13

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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.