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Finding the Fourth Proportional to 101,751.36, 140,419.74 and 61,472.34

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Solution

The fourth proportional to 101,751.36, 140,419.74 and 61,472.34 is: 84,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,751.36 : 140,419.74 = 61,472.34 : x
  2. Step 2: Convert to fraction form
    101,751.36/140,419.74 = 61,472.34/x
  3. Step 3: Cross multiply
    101,751.36x = 140,419.74 × 61,472.34
  4. Step 4: Simplify right side
    101,751.36x = 8,631,929,999.99
  5. Step 5: Solve for x
    x = 8,631,929,999.99/101,751.36
  6. Step 6: Final answer
    x = 84,833.56

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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.