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Finding the Fourth Proportional to 39,878.59, 59,845.50 and 15,860.43

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Solution

The fourth proportional to 39,878.59, 59,845.50 and 15,860.43 is: 23,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,878.59 : 59,845.50 = 15,860.43 : x
  2. Step 2: Convert to fraction form
    39,878.59/59,845.50 = 15,860.43/x
  3. Step 3: Cross multiply
    39,878.59x = 59,845.50 × 15,860.43
  4. Step 4: Simplify right side
    39,878.59x = 949,175,363.57
  5. Step 5: Solve for x
    x = 949,175,363.57/39,878.59
  6. Step 6: Final answer
    x = 23,801.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.