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Finding the Fourth Proportional to 14,663.79, 20,236.04 and 7,949.42

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Solution

The fourth proportional to 14,663.79, 20,236.04 and 7,949.42 is: 10,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.79 : 20,236.04 = 7,949.42 : x
  2. Step 2: Convert to fraction form
    14,663.79/20,236.04 = 7,949.42/x
  3. Step 3: Cross multiply
    14,663.79x = 20,236.04 × 7,949.42
  4. Step 4: Simplify right side
    14,663.79x = 160,864,640.17
  5. Step 5: Solve for x
    x = 160,864,640.17/14,663.79
  6. Step 6: Final answer
    x = 10,970.20

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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.