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Finding the Fourth Proportional to 15,196.80, 20,973.57 and 8,483.82

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Solution

The fourth proportional to 15,196.80, 20,973.57 and 8,483.82 is: 11,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.80 : 20,973.57 = 8,483.82 : x
  2. Step 2: Convert to fraction form
    15,196.80/20,973.57 = 8,483.82/x
  3. Step 3: Cross multiply
    15,196.80x = 20,973.57 × 8,483.82
  4. Step 4: Simplify right side
    15,196.80x = 177,935,992.64
  5. Step 5: Solve for x
    x = 177,935,992.64/15,196.80
  6. Step 6: Final answer
    x = 11,708.78

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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.