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Finding the Fourth Proportional to 587,768.70, 811,111.82 and 329,645.60

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Solution

The fourth proportional to 587,768.70, 811,111.82 and 329,645.60 is: 454,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,768.70 : 811,111.82 = 329,645.60 : x
  2. Step 2: Convert to fraction form
    587,768.70/811,111.82 = 329,645.60/x
  3. Step 3: Cross multiply
    587,768.70x = 811,111.82 × 329,645.60
  4. Step 4: Simplify right side
    587,768.70x = 267,379,436,867.21
  5. Step 5: Solve for x
    x = 267,379,436,867.21/587,768.70
  6. Step 6: Final answer
    x = 454,905.88

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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.