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Finding the Fourth Proportional to 352,768.40, 529,144.94 and 86,530.22

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Solution

The fourth proportional to 352,768.40, 529,144.94 and 86,530.22 is: 129,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,768.40 : 529,144.94 = 86,530.22 : x
  2. Step 2: Convert to fraction form
    352,768.40/529,144.94 = 86,530.22/x
  3. Step 3: Cross multiply
    352,768.40x = 529,144.94 × 86,530.22
  4. Step 4: Simplify right side
    352,768.40x = 45,787,025,640.69
  5. Step 5: Solve for x
    x = 45,787,025,640.69/352,768.40
  6. Step 6: Final answer
    x = 129,793.45

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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.