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Finding the Fourth Proportional to 18,690.92, 25,792.50 and 11,617.22

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Solution

The fourth proportional to 18,690.92, 25,792.50 and 11,617.22 is: 16,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.92 : 25,792.50 = 11,617.22 : x
  2. Step 2: Convert to fraction form
    18,690.92/25,792.50 = 11,617.22/x
  3. Step 3: Cross multiply
    18,690.92x = 25,792.50 × 11,617.22
  4. Step 4: Simplify right side
    18,690.92x = 299,637,146.85
  5. Step 5: Solve for x
    x = 299,637,146.85/18,690.92
  6. Step 6: Final answer
    x = 16,031.16

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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.