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Finding the Fourth Proportional to 256,794.12, 354,392.28 and 143,617.68

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Solution

The fourth proportional to 256,794.12, 354,392.28 and 143,617.68 is: 198,201.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,794.12 : 354,392.28 = 143,617.68 : x
  2. Step 2: Convert to fraction form
    256,794.12/354,392.28 = 143,617.68/x
  3. Step 3: Cross multiply
    256,794.12x = 354,392.28 × 143,617.68
  4. Step 4: Simplify right side
    256,794.12x = 50,896,997,063.51
  5. Step 5: Solve for x
    x = 50,896,997,063.51/256,794.12
  6. Step 6: Final answer
    x = 198,201.57

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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.