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Finding the Fourth Proportional to 247,097.78, 341,000.84 and 139,668.22

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Solution

The fourth proportional to 247,097.78, 341,000.84 and 139,668.22 is: 192,745.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,097.78 : 341,000.84 = 139,668.22 : x
  2. Step 2: Convert to fraction form
    247,097.78/341,000.84 = 139,668.22/x
  3. Step 3: Cross multiply
    247,097.78x = 341,000.84 × 139,668.22
  4. Step 4: Simplify right side
    247,097.78x = 47,626,980,690.48
  5. Step 5: Solve for x
    x = 47,626,980,690.48/247,097.78
  6. Step 6: Final answer
    x = 192,745.49

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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.