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Finding the Fourth Proportional to 352,151.20, 528,226.80 and 321,738.40

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Solution

The fourth proportional to 352,151.20, 528,226.80 and 321,738.40 is: 482,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,151.20 : 528,226.80 = 321,738.40 : x
  2. Step 2: Convert to fraction form
    352,151.20/528,226.80 = 321,738.40/x
  3. Step 3: Cross multiply
    352,151.20x = 528,226.80 × 321,738.40
  4. Step 4: Simplify right side
    352,151.20x = 169,950,845,469.12
  5. Step 5: Solve for x
    x = 169,950,845,469.12/352,151.20
  6. Step 6: Final answer
    x = 482,607.60

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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.