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Finding the Fourth Proportional to 352,418.72, 528,683.16 and 115,707.56

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Solution

The fourth proportional to 352,418.72, 528,683.16 and 115,707.56 is: 173,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,418.72 : 528,683.16 = 115,707.56 : x
  2. Step 2: Convert to fraction form
    352,418.72/528,683.16 = 115,707.56/x
  3. Step 3: Cross multiply
    352,418.72x = 528,683.16 × 115,707.56
  4. Step 4: Simplify right side
    352,418.72x = 61,172,638,456.69
  5. Step 5: Solve for x
    x = 61,172,638,456.69/352,418.72
  6. Step 6: Final answer
    x = 173,579.42

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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.