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Finding the Fourth Proportional to 15,196.58, 20,969.40 and 8,482.58

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Solution

The fourth proportional to 15,196.58, 20,969.40 and 8,482.58 is: 11,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.58 : 20,969.40 = 8,482.58 : x
  2. Step 2: Convert to fraction form
    15,196.58/20,969.40 = 8,482.58/x
  3. Step 3: Cross multiply
    15,196.58x = 20,969.40 × 8,482.58
  4. Step 4: Simplify right side
    15,196.58x = 177,874,613.05
  5. Step 5: Solve for x
    x = 177,874,613.05/15,196.58
  6. Step 6: Final answer
    x = 11,704.91

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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.