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Finding the Fourth Proportional to 342,029.80, 513,044.70 and 92,711.80

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Solution

The fourth proportional to 342,029.80, 513,044.70 and 92,711.80 is: 139,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,029.80 : 513,044.70 = 92,711.80 : x
  2. Step 2: Convert to fraction form
    342,029.80/513,044.70 = 92,711.80/x
  3. Step 3: Cross multiply
    342,029.80x = 513,044.70 × 92,711.80
  4. Step 4: Simplify right side
    342,029.80x = 47,565,297,617.46
  5. Step 5: Solve for x
    x = 47,565,297,617.46/342,029.80
  6. Step 6: Final answer
    x = 139,067.70

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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.