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Finding the Fourth Proportional to 256,935, 354,570.30 and 143,779.62

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Solution

The fourth proportional to 256,935, 354,570.30 and 143,779.62 is: 198,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,935 : 354,570.30 = 143,779.62 : x
  2. Step 2: Convert to fraction form
    256,935/354,570.30 = 143,779.62/x
  3. Step 3: Cross multiply
    256,935x = 354,570.30 × 143,779.62
  4. Step 4: Simplify right side
    256,935x = 50,979,982,997.29
  5. Step 5: Solve for x
    x = 50,979,982,997.29/256,935
  6. Step 6: Final answer
    x = 198,415.88

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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.