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Finding the Fourth Proportional to 234,990.42, 324,292.26 and 139,497.48

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Solution

The fourth proportional to 234,990.42, 324,292.26 and 139,497.48 is: 192,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,990.42 : 324,292.26 = 139,497.48 : x
  2. Step 2: Convert to fraction form
    234,990.42/324,292.26 = 139,497.48/x
  3. Step 3: Cross multiply
    234,990.42x = 324,292.26 × 139,497.48
  4. Step 4: Simplify right side
    234,990.42x = 45,237,953,053.50
  5. Step 5: Solve for x
    x = 45,237,953,053.50/234,990.42
  6. Step 6: Final answer
    x = 192,509.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.