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Finding the Fourth Proportional to 8,840.50, 12,200.18 and 4,861.90

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Solution

The fourth proportional to 8,840.50, 12,200.18 and 4,861.90 is: 6,709.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,840.50 : 12,200.18 = 4,861.90 : x
  2. Step 2: Convert to fraction form
    8,840.50/12,200.18 = 4,861.90/x
  3. Step 3: Cross multiply
    8,840.50x = 12,200.18 × 4,861.90
  4. Step 4: Simplify right side
    8,840.50x = 59,316,055.14
  5. Step 5: Solve for x
    x = 59,316,055.14/8,840.50
  6. Step 6: Final answer
    x = 6,709.58

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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.