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Finding the Fourth Proportional to 352,131.10, 528,202.22 and 85,896.65

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Solution

The fourth proportional to 352,131.10, 528,202.22 and 85,896.65 is: 128,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,131.10 : 528,202.22 = 85,896.65 : x
  2. Step 2: Convert to fraction form
    352,131.10/528,202.22 = 85,896.65/x
  3. Step 3: Cross multiply
    352,131.10x = 528,202.22 × 85,896.65
  4. Step 4: Simplify right side
    352,131.10x = 45,370,802,111.59
  5. Step 5: Solve for x
    x = 45,370,802,111.59/352,131.10
  6. Step 6: Final answer
    x = 128,846.34

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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.