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Finding the Fourth Proportional to 15,196.62, 20,924.55 and 12,953.46

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Solution

The fourth proportional to 15,196.62, 20,924.55 and 12,953.46 is: 17,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.62 : 20,924.55 = 12,953.46 : x
  2. Step 2: Convert to fraction form
    15,196.62/20,924.55 = 12,953.46/x
  3. Step 3: Cross multiply
    15,196.62x = 20,924.55 × 12,953.46
  4. Step 4: Simplify right side
    15,196.62x = 271,045,321.44
  5. Step 5: Solve for x
    x = 271,045,321.44/15,196.62
  6. Step 6: Final answer
    x = 17,835.90

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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.