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Finding the Fourth Proportional to 101,163.50, 139,605.63 and 55,841.49

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Solution

The fourth proportional to 101,163.50, 139,605.63 and 55,841.49 is: 77,061.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,163.50 : 139,605.63 = 55,841.49 : x
  2. Step 2: Convert to fraction form
    101,163.50/139,605.63 = 55,841.49/x
  3. Step 3: Cross multiply
    101,163.50x = 139,605.63 × 55,841.49
  4. Step 4: Simplify right side
    101,163.50x = 7,795,786,391.59
  5. Step 5: Solve for x
    x = 7,795,786,391.59/101,163.50
  6. Step 6: Final answer
    x = 77,061.26

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1.5x scale

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.