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Finding the Fourth Proportional to 8,841.57, 13,263.99 and 2,918.87

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Solution

The fourth proportional to 8,841.57, 13,263.99 and 2,918.87 is: 4,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,841.57 : 13,263.99 = 2,918.87 : x
  2. Step 2: Convert to fraction form
    8,841.57/13,263.99 = 2,918.87/x
  3. Step 3: Cross multiply
    8,841.57x = 13,263.99 × 2,918.87
  4. Step 4: Simplify right side
    8,841.57x = 38,715,870.50
  5. Step 5: Solve for x
    x = 38,715,870.50/8,841.57
  6. Step 6: Final answer
    x = 4,378.85

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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.