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Finding the Fourth Proportional to 256,783.92, 354,360.60 and 143,607.12

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Solution

The fourth proportional to 256,783.92, 354,360.60 and 143,607.12 is: 198,177.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,783.92 : 354,360.60 = 143,607.12 : x
  2. Step 2: Convert to fraction form
    256,783.92/354,360.60 = 143,607.12/x
  3. Step 3: Cross multiply
    256,783.92x = 354,360.60 × 143,607.12
  4. Step 4: Simplify right side
    256,783.92x = 50,888,705,207.47
  5. Step 5: Solve for x
    x = 50,888,705,207.47/256,783.92
  6. Step 6: Final answer
    x = 198,177.15

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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.