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Finding the Fourth Proportional to 49,492.88, 74,578.88 and 40,919.84

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Solution

The fourth proportional to 49,492.88, 74,578.88 and 40,919.84 is: 61,660.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,492.88 : 74,578.88 = 40,919.84 : x
  2. Step 2: Convert to fraction form
    49,492.88/74,578.88 = 40,919.84/x
  3. Step 3: Cross multiply
    49,492.88x = 74,578.88 × 40,919.84
  4. Step 4: Simplify right side
    49,492.88x = 3,051,755,836.98
  5. Step 5: Solve for x
    x = 3,051,755,836.98/49,492.88
  6. Step 6: Final answer
    x = 61,660.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.