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Finding the Fourth Proportional to 92,878.25, 139,366.58 and 40,324.64

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Solution

The fourth proportional to 92,878.25, 139,366.58 and 40,324.64 is: 60,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,878.25 : 139,366.58 = 40,324.64 : x
  2. Step 2: Convert to fraction form
    92,878.25/139,366.58 = 40,324.64/x
  3. Step 3: Cross multiply
    92,878.25x = 139,366.58 × 40,324.64
  4. Step 4: Simplify right side
    92,878.25x = 5,619,906,268.08
  5. Step 5: Solve for x
    x = 5,619,906,268.08/92,878.25
  6. Step 6: Final answer
    x = 60,508.32

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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.