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Finding the Fourth Proportional to 185,354.15, 255,781.86 and 100,469.39

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Solution

The fourth proportional to 185,354.15, 255,781.86 and 100,469.39 is: 138,644.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,354.15 : 255,781.86 = 100,469.39 : x
  2. Step 2: Convert to fraction form
    185,354.15/255,781.86 = 100,469.39/x
  3. Step 3: Cross multiply
    185,354.15x = 255,781.86 × 100,469.39
  4. Step 4: Simplify right side
    185,354.15x = 25,698,246,168.36
  5. Step 5: Solve for x
    x = 25,698,246,168.36/185,354.15
  6. Step 6: Final answer
    x = 138,644.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.