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Finding the Fourth Proportional to 75,139.80, 103,692.92 and 41,605.80

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Solution

The fourth proportional to 75,139.80, 103,692.92 and 41,605.80 is: 57,416.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.80 : 103,692.92 = 41,605.80 : x
  2. Step 2: Convert to fraction form
    75,139.80/103,692.92 = 41,605.80/x
  3. Step 3: Cross multiply
    75,139.80x = 103,692.92 × 41,605.80
  4. Step 4: Simplify right side
    75,139.80x = 4,314,226,890.94
  5. Step 5: Solve for x
    x = 4,314,226,890.94/75,139.80
  6. Step 6: Final answer
    x = 57,416.00

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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.