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Finding the Fourth Proportional to 185,064.38, 277,555.06 and 85,128.60

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Solution

The fourth proportional to 185,064.38, 277,555.06 and 85,128.60 is: 127,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,064.38 : 277,555.06 = 85,128.60 : x
  2. Step 2: Convert to fraction form
    185,064.38/277,555.06 = 85,128.60/x
  3. Step 3: Cross multiply
    185,064.38x = 277,555.06 × 85,128.60
  4. Step 4: Simplify right side
    185,064.38x = 23,627,873,680.72
  5. Step 5: Solve for x
    x = 23,627,873,680.72/185,064.38
  6. Step 6: Final answer
    x = 127,673.81

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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.