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Finding the Fourth Proportional to 101,850.48, 140,555.16 and 56,531.37

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Solution

The fourth proportional to 101,850.48, 140,555.16 and 56,531.37 is: 78,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,850.48 : 140,555.16 = 56,531.37 : x
  2. Step 2: Convert to fraction form
    101,850.48/140,555.16 = 56,531.37/x
  3. Step 3: Cross multiply
    101,850.48x = 140,555.16 × 56,531.37
  4. Step 4: Simplify right side
    101,850.48x = 7,945,775,755.37
  5. Step 5: Solve for x
    x = 7,945,775,755.37/101,850.48
  6. Step 6: Final answer
    x = 78,014.12

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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.