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Finding the Fourth Proportional to 14,993.04, 20,690.28 and 8,706

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Solution

The fourth proportional to 14,993.04, 20,690.28 and 8,706 is: 12,014.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,993.04 : 20,690.28 = 8,706 : x
  2. Step 2: Convert to fraction form
    14,993.04/20,690.28 = 8,706/x
  3. Step 3: Cross multiply
    14,993.04x = 20,690.28 × 8,706
  4. Step 4: Simplify right side
    14,993.04x = 180,129,577.68
  5. Step 5: Solve for x
    x = 180,129,577.68/14,993.04
  6. Step 6: Final answer
    x = 12,014.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.