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Finding the Fourth Proportional to 75,139.80, 103,685.94 and 44,919.24

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Solution

The fourth proportional to 75,139.80, 103,685.94 and 44,919.24 is: 61,984.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.80 : 103,685.94 = 44,919.24 : x
  2. Step 2: Convert to fraction form
    75,139.80/103,685.94 = 44,919.24/x
  3. Step 3: Cross multiply
    75,139.80x = 103,685.94 × 44,919.24
  4. Step 4: Simplify right side
    75,139.80x = 4,657,493,623.49
  5. Step 5: Solve for x
    x = 4,657,493,623.49/75,139.80
  6. Step 6: Final answer
    x = 61,984.38

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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.