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Finding the Fourth Proportional to 48,878.80, 67,454.24 and 28,731.98

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Solution

The fourth proportional to 48,878.80, 67,454.24 and 28,731.98 is: 39,651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,878.80 : 67,454.24 = 28,731.98 : x
  2. Step 2: Convert to fraction form
    48,878.80/67,454.24 = 28,731.98/x
  3. Step 3: Cross multiply
    48,878.80x = 67,454.24 × 28,731.98
  4. Step 4: Simplify right side
    48,878.80x = 1,938,093,899.57
  5. Step 5: Solve for x
    x = 1,938,093,899.57/48,878.80
  6. Step 6: Final answer
    x = 39,651.01

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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.