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Finding the Fourth Proportional to 201,132, 301,736.82 and 76,463.28

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Solution

The fourth proportional to 201,132, 301,736.82 and 76,463.28 is: 114,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,132 : 301,736.82 = 76,463.28 : x
  2. Step 2: Convert to fraction form
    201,132/301,736.82 = 76,463.28/x
  3. Step 3: Cross multiply
    201,132x = 301,736.82 × 76,463.28
  4. Step 4: Simplify right side
    201,132x = 23,071,786,953.97
  5. Step 5: Solve for x
    x = 23,071,786,953.97/201,132
  6. Step 6: Final answer
    x = 114,709.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.