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Finding the Fourth Proportional to 185,517.64, 277,905.48 and 85,540.96

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Solution

The fourth proportional to 185,517.64, 277,905.48 and 85,540.96 is: 128,140.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,517.64 : 277,905.48 = 85,540.96 : x
  2. Step 2: Convert to fraction form
    185,517.64/277,905.48 = 85,540.96/x
  3. Step 3: Cross multiply
    185,517.64x = 277,905.48 × 85,540.96
  4. Step 4: Simplify right side
    185,517.64x = 23,772,301,548.46
  5. Step 5: Solve for x
    x = 23,772,301,548.46/185,517.64
  6. Step 6: Final answer
    x = 128,140.38

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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.