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Finding the Fourth Proportional to 352,230.37, 528,016.86 and 139,000.06

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Solution

The fourth proportional to 352,230.37, 528,016.86 and 139,000.06 is: 208,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,230.37 : 528,016.86 = 139,000.06 : x
  2. Step 2: Convert to fraction form
    352,230.37/528,016.86 = 139,000.06/x
  3. Step 3: Cross multiply
    352,230.37x = 528,016.86 × 139,000.06
  4. Step 4: Simplify right side
    352,230.37x = 73,394,375,221.01
  5. Step 5: Solve for x
    x = 73,394,375,221.01/352,230.37
  6. Step 6: Final answer
    x = 208,370.38

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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.