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Finding the Fourth Proportional to 352,691.26, 528,966.14 and 172,699.16

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Solution

The fourth proportional to 352,691.26, 528,966.14 and 172,699.16 is: 259,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,691.26 : 528,966.14 = 172,699.16 : x
  2. Step 2: Convert to fraction form
    352,691.26/528,966.14 = 172,699.16/x
  3. Step 3: Cross multiply
    352,691.26x = 528,966.14 × 172,699.16
  4. Step 4: Simplify right side
    352,691.26x = 91,352,008,046.44
  5. Step 5: Solve for x
    x = 91,352,008,046.44/352,691.26
  6. Step 6: Final answer
    x = 259,014.10

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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.