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Finding the Fourth Proportional to 14,658.79, 20,229.08 and 7,944.58

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Solution

The fourth proportional to 14,658.79, 20,229.08 and 7,944.58 is: 10,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,658.79 : 20,229.08 = 7,944.58 : x
  2. Step 2: Convert to fraction form
    14,658.79/20,229.08 = 7,944.58/x
  3. Step 3: Cross multiply
    14,658.79x = 20,229.08 × 7,944.58
  4. Step 4: Simplify right side
    14,658.79x = 160,711,454.09
  5. Step 5: Solve for x
    x = 160,711,454.09/14,658.79
  6. Step 6: Final answer
    x = 10,963.49

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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.