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Finding the Fourth Proportional to 18,965.24, 26,172.16 and 10,467.63

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Solution

The fourth proportional to 18,965.24, 26,172.16 and 10,467.63 is: 14,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.24 : 26,172.16 = 10,467.63 : x
  2. Step 2: Convert to fraction form
    18,965.24/26,172.16 = 10,467.63/x
  3. Step 3: Cross multiply
    18,965.24x = 26,172.16 × 10,467.63
  4. Step 4: Simplify right side
    18,965.24x = 273,960,487.18
  5. Step 5: Solve for x
    x = 273,960,487.18/18,965.24
  6. Step 6: Final answer
    x = 14,445.40

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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.