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Finding the Fourth Proportional to 101,659.53, 140,299.92 and 56,347.32

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Solution

The fourth proportional to 101,659.53, 140,299.92 and 56,347.32 is: 77,764.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,659.53 : 140,299.92 = 56,347.32 : x
  2. Step 2: Convert to fraction form
    101,659.53/140,299.92 = 56,347.32/x
  3. Step 3: Cross multiply
    101,659.53x = 140,299.92 × 56,347.32
  4. Step 4: Simplify right side
    101,659.53x = 7,905,524,488.21
  5. Step 5: Solve for x
    x = 7,905,524,488.21/101,659.53
  6. Step 6: Final answer
    x = 77,764.72

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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.