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Finding the Fourth Proportional to 479,693.26, 661,966.14 and 261,894.52

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Solution

The fourth proportional to 479,693.26, 661,966.14 and 261,894.52 is: 361,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,693.26 : 661,966.14 = 261,894.52 : x
  2. Step 2: Convert to fraction form
    479,693.26/661,966.14 = 261,894.52/x
  3. Step 3: Cross multiply
    479,693.26x = 661,966.14 × 261,894.52
  4. Step 4: Simplify right side
    479,693.26x = 173,365,304,491.55
  5. Step 5: Solve for x
    x = 173,365,304,491.55/479,693.26
  6. Step 6: Final answer
    x = 361,408.67

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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.