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Finding the Fourth Proportional to 16,666.20, 23,008.95 and 12,440.55

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Solution

The fourth proportional to 16,666.20, 23,008.95 and 12,440.55 is: 17,175.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,666.20 : 23,008.95 = 12,440.55 : x
  2. Step 2: Convert to fraction form
    16,666.20/23,008.95 = 12,440.55/x
  3. Step 3: Cross multiply
    16,666.20x = 23,008.95 × 12,440.55
  4. Step 4: Simplify right side
    16,666.20x = 286,243,992.92
  5. Step 5: Solve for x
    x = 286,243,992.92/16,666.20
  6. Step 6: Final answer
    x = 17,175.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.