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Finding the Fourth Proportional to 8,915.12, 12,302.73 and 4,881.86

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Solution

The fourth proportional to 8,915.12, 12,302.73 and 4,881.86 is: 6,736.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.12 : 12,302.73 = 4,881.86 : x
  2. Step 2: Convert to fraction form
    8,915.12/12,302.73 = 4,881.86/x
  3. Step 3: Cross multiply
    8,915.12x = 12,302.73 × 4,881.86
  4. Step 4: Simplify right side
    8,915.12x = 60,060,143.96
  5. Step 5: Solve for x
    x = 60,060,143.96/8,915.12
  6. Step 6: Final answer
    x = 6,736.89

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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.