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Finding the Fourth Proportional to 74,745.84, 103,145.76 and 44,551.20

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Solution

The fourth proportional to 74,745.84, 103,145.76 and 44,551.20 is: 61,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,745.84 : 103,145.76 = 44,551.20 : x
  2. Step 2: Convert to fraction form
    74,745.84/103,145.76 = 44,551.20/x
  3. Step 3: Cross multiply
    74,745.84x = 103,145.76 × 44,551.20
  4. Step 4: Simplify right side
    74,745.84x = 4,595,267,382.91
  5. Step 5: Solve for x
    x = 4,595,267,382.91/74,745.84
  6. Step 6: Final answer
    x = 61,478.57

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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.