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Finding the Fourth Proportional to 17,663.94, 26,496.72 and 12,492.90

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Solution

The fourth proportional to 17,663.94, 26,496.72 and 12,492.90 is: 18,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,663.94 : 26,496.72 = 12,492.90 : x
  2. Step 2: Convert to fraction form
    17,663.94/26,496.72 = 12,492.90/x
  3. Step 3: Cross multiply
    17,663.94x = 26,496.72 × 12,492.90
  4. Step 4: Simplify right side
    17,663.94x = 331,020,873.29
  5. Step 5: Solve for x
    x = 331,020,873.29/17,663.94
  6. Step 6: Final answer
    x = 18,739.92

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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.