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Finding the Fourth Proportional to 352,171.10, 528,201.56 and 99,470.54

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Solution

The fourth proportional to 352,171.10, 528,201.56 and 99,470.54 is: 149,190.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,171.10 : 528,201.56 = 99,470.54 : x
  2. Step 2: Convert to fraction form
    352,171.10/528,201.56 = 99,470.54/x
  3. Step 3: Cross multiply
    352,171.10x = 528,201.56 × 99,470.54
  4. Step 4: Simplify right side
    352,171.10x = 52,540,494,402.04
  5. Step 5: Solve for x
    x = 52,540,494,402.04/352,171.10
  6. Step 6: Final answer
    x = 149,190.25

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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.