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Finding the Fourth Proportional to 256,846.87, 354,429.43 and 143,647.75

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Solution

The fourth proportional to 256,846.87, 354,429.43 and 143,647.75 is: 198,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,846.87 : 354,429.43 = 143,647.75 : x
  2. Step 2: Convert to fraction form
    256,846.87/354,429.43 = 143,647.75/x
  3. Step 3: Cross multiply
    256,846.87x = 354,429.43 × 143,647.75
  4. Step 4: Simplify right side
    256,846.87x = 50,912,990,153.28
  5. Step 5: Solve for x
    x = 50,912,990,153.28/256,846.87
  6. Step 6: Final answer
    x = 198,223.13

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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.