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Finding the Fourth Proportional to 16,931.52, 25,397 and 4,619.52

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Solution

The fourth proportional to 16,931.52, 25,397 and 4,619.52 is: 6,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.52 : 25,397 = 4,619.52 : x
  2. Step 2: Convert to fraction form
    16,931.52/25,397 = 4,619.52/x
  3. Step 3: Cross multiply
    16,931.52x = 25,397 × 4,619.52
  4. Step 4: Simplify right side
    16,931.52x = 117,321,949.44
  5. Step 5: Solve for x
    x = 117,321,949.44/16,931.52
  6. Step 6: Final answer
    x = 6,929.20

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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.