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Finding the Fourth Proportional to 75,136.80, 103,645.26 and 44,518.80

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Solution

The fourth proportional to 75,136.80, 103,645.26 and 44,518.80 is: 61,410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.80 : 103,645.26 = 44,518.80 : x
  2. Step 2: Convert to fraction form
    75,136.80/103,645.26 = 44,518.80/x
  3. Step 3: Cross multiply
    75,136.80x = 103,645.26 × 44,518.80
  4. Step 4: Simplify right side
    75,136.80x = 4,614,162,600.89
  5. Step 5: Solve for x
    x = 4,614,162,600.89/75,136.80
  6. Step 6: Final answer
    x = 61,410.16

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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.