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Finding the Fourth Proportional to 120,755.39, 181,133.73 and 70,800.48

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Solution

The fourth proportional to 120,755.39, 181,133.73 and 70,800.48 is: 106,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,755.39 : 181,133.73 = 70,800.48 : x
  2. Step 2: Convert to fraction form
    120,755.39/181,133.73 = 70,800.48/x
  3. Step 3: Cross multiply
    120,755.39x = 181,133.73 × 70,800.48
  4. Step 4: Simplify right side
    120,755.39x = 12,824,355,028.19
  5. Step 5: Solve for x
    x = 12,824,355,028.19/120,755.39
  6. Step 6: Final answer
    x = 106,201.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.