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Finding the Fourth Proportional to 352,060.80, 528,091.20 and 130,531.20

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Solution

The fourth proportional to 352,060.80, 528,091.20 and 130,531.20 is: 195,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,060.80 : 528,091.20 = 130,531.20 : x
  2. Step 2: Convert to fraction form
    352,060.80/528,091.20 = 130,531.20/x
  3. Step 3: Cross multiply
    352,060.80x = 528,091.20 × 130,531.20
  4. Step 4: Simplify right side
    352,060.80x = 68,932,378,045.44
  5. Step 5: Solve for x
    x = 68,932,378,045.44/352,060.80
  6. Step 6: Final answer
    x = 195,796.80

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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.