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Finding the Fourth Proportional to 284,221.20, 425,512.60 and 173,629.20

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Solution

The fourth proportional to 284,221.20, 425,512.60 and 173,629.20 is: 259,943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,221.20 : 425,512.60 = 173,629.20 : x
  2. Step 2: Convert to fraction form
    284,221.20/425,512.60 = 173,629.20/x
  3. Step 3: Cross multiply
    284,221.20x = 425,512.60 × 173,629.20
  4. Step 4: Simplify right side
    284,221.20x = 73,881,412,327.92
  5. Step 5: Solve for x
    x = 73,881,412,327.92/284,221.20
  6. Step 6: Final answer
    x = 259,943.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.