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Finding the Fourth Proportional to 17,954.21, 26,931.47 and 6,712.09

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Solution

The fourth proportional to 17,954.21, 26,931.47 and 6,712.09 is: 10,068.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,954.21 : 26,931.47 = 6,712.09 : x
  2. Step 2: Convert to fraction form
    17,954.21/26,931.47 = 6,712.09/x
  3. Step 3: Cross multiply
    17,954.21x = 26,931.47 × 6,712.09
  4. Step 4: Simplify right side
    17,954.21x = 180,766,349.58
  5. Step 5: Solve for x
    x = 180,766,349.58/17,954.21
  6. Step 6: Final answer
    x = 10,068.19

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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.