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Finding the Fourth Proportional to 17,696.88, 24,421.50 and 12,389.76

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Solution

The fourth proportional to 17,696.88, 24,421.50 and 12,389.76 is: 17,097.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,696.88 : 24,421.50 = 12,389.76 : x
  2. Step 2: Convert to fraction form
    17,696.88/24,421.50 = 12,389.76/x
  3. Step 3: Cross multiply
    17,696.88x = 24,421.50 × 12,389.76
  4. Step 4: Simplify right side
    17,696.88x = 302,576,523.84
  5. Step 5: Solve for x
    x = 302,576,523.84/17,696.88
  6. Step 6: Final answer
    x = 17,097.73

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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.