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Finding the Fourth Proportional to 185,630.76, 256,170.31 and 100,747.89

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Solution

The fourth proportional to 185,630.76, 256,170.31 and 100,747.89 is: 139,032.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,630.76 : 256,170.31 = 100,747.89 : x
  2. Step 2: Convert to fraction form
    185,630.76/256,170.31 = 100,747.89/x
  3. Step 3: Cross multiply
    185,630.76x = 256,170.31 × 100,747.89
  4. Step 4: Simplify right side
    185,630.76x = 25,808,618,213.15
  5. Step 5: Solve for x
    x = 25,808,618,213.15/185,630.76
  6. Step 6: Final answer
    x = 139,032.01

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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.