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Finding the Fourth Proportional to 17,756.62, 26,639.10 and 5,276.74

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Solution

The fourth proportional to 17,756.62, 26,639.10 and 5,276.74 is: 7,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,756.62 : 26,639.10 = 5,276.74 : x
  2. Step 2: Convert to fraction form
    17,756.62/26,639.10 = 5,276.74/x
  3. Step 3: Cross multiply
    17,756.62x = 26,639.10 × 5,276.74
  4. Step 4: Simplify right side
    17,756.62x = 140,567,604.53
  5. Step 5: Solve for x
    x = 140,567,604.53/17,756.62
  6. Step 6: Final answer
    x = 7,916.35

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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.