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Finding the Fourth Proportional to 303,839.72, 455,711.62 and 191,175.06

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Solution

The fourth proportional to 303,839.72, 455,711.62 and 191,175.06 is: 286,732.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,839.72 : 455,711.62 = 191,175.06 : x
  2. Step 2: Convert to fraction form
    303,839.72/455,711.62 = 191,175.06/x
  3. Step 3: Cross multiply
    303,839.72x = 455,711.62 × 191,175.06
  4. Step 4: Simplify right side
    303,839.72x = 87,120,696,296.20
  5. Step 5: Solve for x
    x = 87,120,696,296.20/303,839.72
  6. Step 6: Final answer
    x = 286,732.41

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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.