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Finding the Fourth Proportional to 256,873.62, 354,501.99 and 143,697.18

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Solution

The fourth proportional to 256,873.62, 354,501.99 and 143,697.18 is: 198,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,873.62 : 354,501.99 = 143,697.18 : x
  2. Step 2: Convert to fraction form
    256,873.62/354,501.99 = 143,697.18/x
  3. Step 3: Cross multiply
    256,873.62x = 354,501.99 × 143,697.18
  4. Step 4: Simplify right side
    256,873.62x = 50,940,936,267.39
  5. Step 5: Solve for x
    x = 50,940,936,267.39/256,873.62
  6. Step 6: Final answer
    x = 198,311.28

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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.