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Finding the Fourth Proportional to 75,136.66, 103,681.41 and 44,915.98

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Solution

The fourth proportional to 75,136.66, 103,681.41 and 44,915.98 is: 61,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.66 : 103,681.41 = 44,915.98 : x
  2. Step 2: Convert to fraction form
    75,136.66/103,681.41 = 44,915.98/x
  3. Step 3: Cross multiply
    75,136.66x = 103,681.41 × 44,915.98
  4. Step 4: Simplify right side
    75,136.66x = 4,656,952,137.93
  5. Step 5: Solve for x
    x = 4,656,952,137.93/75,136.66
  6. Step 6: Final answer
    x = 61,979.76

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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.