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Finding the Fourth Proportional to 103,644.48, 155,481.30 and 51,054.42

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Solution

The fourth proportional to 103,644.48, 155,481.30 and 51,054.42 is: 76,588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,644.48 : 155,481.30 = 51,054.42 : x
  2. Step 2: Convert to fraction form
    103,644.48/155,481.30 = 51,054.42/x
  3. Step 3: Cross multiply
    103,644.48x = 155,481.30 × 51,054.42
  4. Step 4: Simplify right side
    103,644.48x = 7,938,007,592.35
  5. Step 5: Solve for x
    x = 7,938,007,592.35/103,644.48
  6. Step 6: Final answer
    x = 76,588.81

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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.