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Finding the Fourth Proportional to 352,546.45, 528,752.03 and 99,765.90

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Solution

The fourth proportional to 352,546.45, 528,752.03 and 99,765.90 is: 149,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,546.45 : 528,752.03 = 99,765.90 : x
  2. Step 2: Convert to fraction form
    352,546.45/528,752.03 = 99,765.90/x
  3. Step 3: Cross multiply
    352,546.45x = 528,752.03 × 99,765.90
  4. Step 4: Simplify right side
    352,546.45x = 52,751,421,650.95
  5. Step 5: Solve for x
    x = 52,751,421,650.95/352,546.45
  6. Step 6: Final answer
    x = 149,629.71

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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.