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Finding the Fourth Proportional to 352,309.88, 528,552.29 and 102,991.88

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Solution

The fourth proportional to 352,309.88, 528,552.29 and 102,991.88 is: 154,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,309.88 : 528,552.29 = 102,991.88 : x
  2. Step 2: Convert to fraction form
    352,309.88/528,552.29 = 102,991.88/x
  3. Step 3: Cross multiply
    352,309.88x = 528,552.29 × 102,991.88
  4. Step 4: Simplify right side
    352,309.88x = 54,436,590,867.68
  5. Step 5: Solve for x
    x = 54,436,590,867.68/352,309.88
  6. Step 6: Final answer
    x = 154,513.38

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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.