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Finding the Fourth Proportional to 16,611.52, 22,923.92 and 10,643.20

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Solution

The fourth proportional to 16,611.52, 22,923.92 and 10,643.20 is: 14,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,611.52 : 22,923.92 = 10,643.20 : x
  2. Step 2: Convert to fraction form
    16,611.52/22,923.92 = 10,643.20/x
  3. Step 3: Cross multiply
    16,611.52x = 22,923.92 × 10,643.20
  4. Step 4: Simplify right side
    16,611.52x = 243,983,865.34
  5. Step 5: Solve for x
    x = 243,983,865.34/16,611.52
  6. Step 6: Final answer
    x = 14,687.63

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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.