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Finding the Fourth Proportional to 256,601.39, 354,115.28 and 141,889.48

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Solution

The fourth proportional to 256,601.39, 354,115.28 and 141,889.48 is: 195,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,601.39 : 354,115.28 = 141,889.48 : x
  2. Step 2: Convert to fraction form
    256,601.39/354,115.28 = 141,889.48/x
  3. Step 3: Cross multiply
    256,601.39x = 354,115.28 × 141,889.48
  4. Step 4: Simplify right side
    256,601.39x = 50,245,234,699.03
  5. Step 5: Solve for x
    x = 50,245,234,699.03/256,601.39
  6. Step 6: Final answer
    x = 195,810.45

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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.