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Finding the Fourth Proportional to 103,355.44, 142,638.78 and 58,036.44

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Solution

The fourth proportional to 103,355.44, 142,638.78 and 58,036.44 is: 80,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,355.44 : 142,638.78 = 58,036.44 : x
  2. Step 2: Convert to fraction form
    103,355.44/142,638.78 = 58,036.44/x
  3. Step 3: Cross multiply
    103,355.44x = 142,638.78 × 58,036.44
  4. Step 4: Simplify right side
    103,355.44x = 8,278,246,997.14
  5. Step 5: Solve for x
    x = 8,278,246,997.14/103,355.44
  6. Step 6: Final answer
    x = 80,094.93

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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.