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Finding the Fourth Proportional to 93,194.40, 140,473.39 and 85,207.40

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Solution

The fourth proportional to 93,194.40, 140,473.39 and 85,207.40 is: 128,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,194.40 : 140,473.39 = 85,207.40 : x
  2. Step 2: Convert to fraction form
    93,194.40/140,473.39 = 85,207.40/x
  3. Step 3: Cross multiply
    93,194.40x = 140,473.39 × 85,207.40
  4. Step 4: Simplify right side
    93,194.40x = 11,969,372,331.09
  5. Step 5: Solve for x
    x = 11,969,372,331.09/93,194.40
  6. Step 6: Final answer
    x = 128,434.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.