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Finding the Fourth Proportional to 101,348.76, 139,861.20 and 61,064.22

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Solution

The fourth proportional to 101,348.76, 139,861.20 and 61,064.22 is: 84,268.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,348.76 : 139,861.20 = 61,064.22 : x
  2. Step 2: Convert to fraction form
    101,348.76/139,861.20 = 61,064.22/x
  3. Step 3: Cross multiply
    101,348.76x = 139,861.20 × 61,064.22
  4. Step 4: Simplify right side
    101,348.76x = 8,540,515,086.26
  5. Step 5: Solve for x
    x = 8,540,515,086.26/101,348.76
  6. Step 6: Final answer
    x = 84,268.57

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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.