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Finding the Fourth Proportional to 220,898.62, 304,743.82 and 139,177.26

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Solution

The fourth proportional to 220,898.62, 304,743.82 and 139,177.26 is: 192,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,898.62 : 304,743.82 = 139,177.26 : x
  2. Step 2: Convert to fraction form
    220,898.62/304,743.82 = 139,177.26/x
  3. Step 3: Cross multiply
    220,898.62x = 304,743.82 × 139,177.26
  4. Step 4: Simplify right side
    220,898.62x = 42,413,409,869.53
  5. Step 5: Solve for x
    x = 42,413,409,869.53/220,898.62
  6. Step 6: Final answer
    x = 192,003.96

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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.