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Finding the Fourth Proportional to 17,980.63, 26,946.31 and 11,411.43

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Solution

The fourth proportional to 17,980.63, 26,946.31 and 11,411.43 is: 17,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.63 : 26,946.31 = 11,411.43 : x
  2. Step 2: Convert to fraction form
    17,980.63/26,946.31 = 11,411.43/x
  3. Step 3: Cross multiply
    17,980.63x = 26,946.31 × 11,411.43
  4. Step 4: Simplify right side
    17,980.63x = 307,495,930.32
  5. Step 5: Solve for x
    x = 307,495,930.32/17,980.63
  6. Step 6: Final answer
    x = 17,101.51

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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.