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Finding the Fourth Proportional to 105,572.77, 145,692.79 and 60,249.85

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Solution

The fourth proportional to 105,572.77, 145,692.79 and 60,249.85 is: 83,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.77 : 145,692.79 = 60,249.85 : x
  2. Step 2: Convert to fraction form
    105,572.77/145,692.79 = 60,249.85/x
  3. Step 3: Cross multiply
    105,572.77x = 145,692.79 × 60,249.85
  4. Step 4: Simplify right side
    105,572.77x = 8,777,968,228.72
  5. Step 5: Solve for x
    x = 8,777,968,228.72/105,572.77
  6. Step 6: Final answer
    x = 83,146.14

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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.