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Finding the Fourth Proportional to 92,860.20, 139,238 and 29,665.48

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Solution

The fourth proportional to 92,860.20, 139,238 and 29,665.48 is: 44,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,860.20 : 139,238 = 29,665.48 : x
  2. Step 2: Convert to fraction form
    92,860.20/139,238 = 29,665.48/x
  3. Step 3: Cross multiply
    92,860.20x = 139,238 × 29,665.48
  4. Step 4: Simplify right side
    92,860.20x = 4,130,562,104.24
  5. Step 5: Solve for x
    x = 4,130,562,104.24/92,860.20
  6. Step 6: Final answer
    x = 44,481.51

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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.