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Finding the Fourth Proportional to 92,911.60, 139,324.86 and 29,719.48

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Solution

The fourth proportional to 92,911.60, 139,324.86 and 29,719.48 is: 44,565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.60 : 139,324.86 = 29,719.48 : x
  2. Step 2: Convert to fraction form
    92,911.60/139,324.86 = 29,719.48/x
  3. Step 3: Cross multiply
    92,911.60x = 139,324.86 × 29,719.48
  4. Step 4: Simplify right side
    92,911.60x = 4,140,662,390.27
  5. Step 5: Solve for x
    x = 4,140,662,390.27/92,911.60
  6. Step 6: Final answer
    x = 44,565.61

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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.