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Finding the Fourth Proportional to 8,914.78, 12,302.59 and 4,881.78

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Solution

The fourth proportional to 8,914.78, 12,302.59 and 4,881.78 is: 6,736.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.78 : 12,302.59 = 4,881.78 : x
  2. Step 2: Convert to fraction form
    8,914.78/12,302.59 = 4,881.78/x
  3. Step 3: Cross multiply
    8,914.78x = 12,302.59 × 4,881.78
  4. Step 4: Simplify right side
    8,914.78x = 60,058,543.91
  5. Step 5: Solve for x
    x = 60,058,543.91/8,914.78
  6. Step 6: Final answer
    x = 6,736.96

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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.