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Finding the Fourth Proportional to 181,692.09, 251,019.54 and 138,821.63

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Solution

The fourth proportional to 181,692.09, 251,019.54 and 138,821.63 is: 191,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,692.09 : 251,019.54 = 138,821.63 : x
  2. Step 2: Convert to fraction form
    181,692.09/251,019.54 = 138,821.63/x
  3. Step 3: Cross multiply
    181,692.09x = 251,019.54 × 138,821.63
  4. Step 4: Simplify right side
    181,692.09x = 34,846,940,449.55
  5. Step 5: Solve for x
    x = 34,846,940,449.55/181,692.09
  6. Step 6: Final answer
    x = 191,791.18

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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.