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Finding the Fourth Proportional to 28,466.98, 42,705.96 and 8,742.04

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Solution

The fourth proportional to 28,466.98, 42,705.96 and 8,742.04 is: 13,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.98 : 42,705.96 = 8,742.04 : x
  2. Step 2: Convert to fraction form
    28,466.98/42,705.96 = 8,742.04/x
  3. Step 3: Cross multiply
    28,466.98x = 42,705.96 × 8,742.04
  4. Step 4: Simplify right side
    28,466.98x = 373,337,210.56
  5. Step 5: Solve for x
    x = 373,337,210.56/28,466.98
  6. Step 6: Final answer
    x = 13,114.75

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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.