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Finding the Fourth Proportional to 256,476.43, 353,980.53 and 173,652.85

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Solution

The fourth proportional to 256,476.43, 353,980.53 and 173,652.85 is: 239,670.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,476.43 : 353,980.53 = 173,652.85 : x
  2. Step 2: Convert to fraction form
    256,476.43/353,980.53 = 173,652.85/x
  3. Step 3: Cross multiply
    256,476.43x = 353,980.53 × 173,652.85
  4. Step 4: Simplify right side
    256,476.43x = 61,469,728,321.49
  5. Step 5: Solve for x
    x = 61,469,728,321.49/256,476.43
  6. Step 6: Final answer
    x = 239,670.09

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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.