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Finding the Fourth Proportional to 185,662.13, 256,213.13 and 100,778.58

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Solution

The fourth proportional to 185,662.13, 256,213.13 and 100,778.58 is: 139,074.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,662.13 : 256,213.13 = 100,778.58 : x
  2. Step 2: Convert to fraction form
    185,662.13/256,213.13 = 100,778.58/x
  3. Step 3: Cross multiply
    185,662.13x = 256,213.13 × 100,778.58
  4. Step 4: Simplify right side
    185,662.13x = 25,820,794,914.86
  5. Step 5: Solve for x
    x = 25,820,794,914.86/185,662.13
  6. Step 6: Final answer
    x = 139,074.11

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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.