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Finding the Fourth Proportional to 8,988.92, 12,396.37 and 6,160.40

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Solution

The fourth proportional to 8,988.92, 12,396.37 and 6,160.40 is: 8,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.92 : 12,396.37 = 6,160.40 : x
  2. Step 2: Convert to fraction form
    8,988.92/12,396.37 = 6,160.40/x
  3. Step 3: Cross multiply
    8,988.92x = 12,396.37 × 6,160.40
  4. Step 4: Simplify right side
    8,988.92x = 76,366,597.75
  5. Step 5: Solve for x
    x = 76,366,597.75/8,988.92
  6. Step 6: Final answer
    x = 8,495.64

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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.