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Finding the Fourth Proportional to 8,683.76, 13,014.96 and 4,938.68

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Solution

The fourth proportional to 8,683.76, 13,014.96 and 4,938.68 is: 7,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.76 : 13,014.96 = 4,938.68 : x
  2. Step 2: Convert to fraction form
    8,683.76/13,014.96 = 4,938.68/x
  3. Step 3: Cross multiply
    8,683.76x = 13,014.96 × 4,938.68
  4. Step 4: Simplify right side
    8,683.76x = 64,276,755.19
  5. Step 5: Solve for x
    x = 64,276,755.19/8,683.76
  6. Step 6: Final answer
    x = 7,401.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.