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Finding the Fourth Proportional to 219,518.52, 329,243.46 and 69,739.12

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Solution

The fourth proportional to 219,518.52, 329,243.46 and 69,739.12 is: 104,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,518.52 : 329,243.46 = 69,739.12 : x
  2. Step 2: Convert to fraction form
    219,518.52/329,243.46 = 69,739.12/x
  3. Step 3: Cross multiply
    219,518.52x = 329,243.46 × 69,739.12
  4. Step 4: Simplify right side
    219,518.52x = 22,961,149,166.16
  5. Step 5: Solve for x
    x = 22,961,149,166.16/219,518.52
  6. Step 6: Final answer
    x = 104,597.78

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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.