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Finding the Fourth Proportional to 14,655.72, 20,224.82 and 7,941.30

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Solution

The fourth proportional to 14,655.72, 20,224.82 and 7,941.30 is: 10,958.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,655.72 : 20,224.82 = 7,941.30 : x
  2. Step 2: Convert to fraction form
    14,655.72/20,224.82 = 7,941.30/x
  3. Step 3: Cross multiply
    14,655.72x = 20,224.82 × 7,941.30
  4. Step 4: Simplify right side
    14,655.72x = 160,611,363.07
  5. Step 5: Solve for x
    x = 160,611,363.07/14,655.72
  6. Step 6: Final answer
    x = 10,958.95

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1.5x scale

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.