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Finding the Fourth Proportional to 101,881.94, 140,590.02 and 56,556.34

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Solution

The fourth proportional to 101,881.94, 140,590.02 and 56,556.34 is: 78,043.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,881.94 : 140,590.02 = 56,556.34 : x
  2. Step 2: Convert to fraction form
    101,881.94/140,590.02 = 56,556.34/x
  3. Step 3: Cross multiply
    101,881.94x = 140,590.02 × 56,556.34
  4. Step 4: Simplify right side
    101,881.94x = 7,951,256,971.73
  5. Step 5: Solve for x
    x = 7,951,256,971.73/101,881.94
  6. Step 6: Final answer
    x = 78,043.83

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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.