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Finding the Fourth Proportional to 9,307.85, 12,845.39 and 5,328.86

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Solution

The fourth proportional to 9,307.85, 12,845.39 and 5,328.86 is: 7,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,307.85 : 12,845.39 = 5,328.86 : x
  2. Step 2: Convert to fraction form
    9,307.85/12,845.39 = 5,328.86/x
  3. Step 3: Cross multiply
    9,307.85x = 12,845.39 × 5,328.86
  4. Step 4: Simplify right side
    9,307.85x = 68,451,194.08
  5. Step 5: Solve for x
    x = 68,451,194.08/9,307.85
  6. Step 6: Final answer
    x = 7,354.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.