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Finding the Fourth Proportional to 19,263.70, 28,895.64 and 8,167.60

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Solution

The fourth proportional to 19,263.70, 28,895.64 and 8,167.60 is: 12,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.70 : 28,895.64 = 8,167.60 : x
  2. Step 2: Convert to fraction form
    19,263.70/28,895.64 = 8,167.60/x
  3. Step 3: Cross multiply
    19,263.70x = 28,895.64 × 8,167.60
  4. Step 4: Simplify right side
    19,263.70x = 236,008,029.26
  5. Step 5: Solve for x
    x = 236,008,029.26/19,263.70
  6. Step 6: Final answer
    x = 12,251.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.