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Finding the Fourth Proportional to 28,692.44, 43,055.34 and 12,051.20

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Solution

The fourth proportional to 28,692.44, 43,055.34 and 12,051.20 is: 18,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.44 : 43,055.34 = 12,051.20 : x
  2. Step 2: Convert to fraction form
    28,692.44/43,055.34 = 12,051.20/x
  3. Step 3: Cross multiply
    28,692.44x = 43,055.34 × 12,051.20
  4. Step 4: Simplify right side
    28,692.44x = 518,868,513.41
  5. Step 5: Solve for x
    x = 518,868,513.41/28,692.44
  6. Step 6: Final answer
    x = 18,083.81

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Why These Related Problems?

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