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Finding the Fourth Proportional to 16,621.78, 24,929.40 and 4,932.40

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Solution

The fourth proportional to 16,621.78, 24,929.40 and 4,932.40 is: 7,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,621.78 : 24,929.40 = 4,932.40 : x
  2. Step 2: Convert to fraction form
    16,621.78/24,929.40 = 4,932.40/x
  3. Step 3: Cross multiply
    16,621.78x = 24,929.40 × 4,932.40
  4. Step 4: Simplify right side
    16,621.78x = 122,961,772.56
  5. Step 5: Solve for x
    x = 122,961,772.56/16,621.78
  6. Step 6: Final answer
    x = 7,397.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.