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Finding the Fourth Proportional to 256,675.56, 354,227.76 and 143,499.12

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Solution

The fourth proportional to 256,675.56, 354,227.76 and 143,499.12 is: 198,037.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,675.56 : 354,227.76 = 143,499.12 : x
  2. Step 2: Convert to fraction form
    256,675.56/354,227.76 = 143,499.12/x
  3. Step 3: Cross multiply
    256,675.56x = 354,227.76 × 143,499.12
  4. Step 4: Simplify right side
    256,675.56x = 50,831,371,839.57
  5. Step 5: Solve for x
    x = 50,831,371,839.57/256,675.56
  6. Step 6: Final answer
    x = 198,037.44

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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.