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Finding the Fourth Proportional to 352,190.40, 528,091.20 and 115,411.20

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Solution

The fourth proportional to 352,190.40, 528,091.20 and 115,411.20 is: 173,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,190.40 : 528,091.20 = 115,411.20 : x
  2. Step 2: Convert to fraction form
    352,190.40/528,091.20 = 115,411.20/x
  3. Step 3: Cross multiply
    352,190.40x = 528,091.20 × 115,411.20
  4. Step 4: Simplify right side
    352,190.40x = 60,947,639,101.44
  5. Step 5: Solve for x
    x = 60,947,639,101.44/352,190.40
  6. Step 6: Final answer
    x = 173,053.10

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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.