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Finding the Fourth Proportional to 19,369.70, 26,742.97 and 14,885.30

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Solution

The fourth proportional to 19,369.70, 26,742.97 and 14,885.30 is: 20,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.70 : 26,742.97 = 14,885.30 : x
  2. Step 2: Convert to fraction form
    19,369.70/26,742.97 = 14,885.30/x
  3. Step 3: Cross multiply
    19,369.70x = 26,742.97 × 14,885.30
  4. Step 4: Simplify right side
    19,369.70x = 398,077,131.34
  5. Step 5: Solve for x
    x = 398,077,131.34/19,369.70
  6. Step 6: Final answer
    x = 20,551.54

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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.