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Finding the Fourth Proportional to 15,166.71, 20,926.53 and 9,197.19

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Solution

The fourth proportional to 15,166.71, 20,926.53 and 9,197.19 is: 12,689.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,166.71 : 20,926.53 = 9,197.19 : x
  2. Step 2: Convert to fraction form
    15,166.71/20,926.53 = 9,197.19/x
  3. Step 3: Cross multiply
    15,166.71x = 20,926.53 × 9,197.19
  4. Step 4: Simplify right side
    15,166.71x = 192,465,272.45
  5. Step 5: Solve for x
    x = 192,465,272.45/15,166.71
  6. Step 6: Final answer
    x = 12,689.98

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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.