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Finding the Fourth Proportional to 256,658.90, 354,179.12 and 141,930.09

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Solution

The fourth proportional to 256,658.90, 354,179.12 and 141,930.09 is: 195,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,658.90 : 354,179.12 = 141,930.09 : x
  2. Step 2: Convert to fraction form
    256,658.90/354,179.12 = 141,930.09/x
  3. Step 3: Cross multiply
    256,658.90x = 354,179.12 × 141,930.09
  4. Step 4: Simplify right side
    256,658.90x = 50,268,673,668.07
  5. Step 5: Solve for x
    x = 50,268,673,668.07/256,658.90
  6. Step 6: Final answer
    x = 195,857.91

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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.