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Finding the Fourth Proportional to 17,751.63, 26,631.62 and 5,271.76

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Solution

The fourth proportional to 17,751.63, 26,631.62 and 5,271.76 is: 7,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,751.63 : 26,631.62 = 5,271.76 : x
  2. Step 2: Convert to fraction form
    17,751.63/26,631.62 = 5,271.76/x
  3. Step 3: Cross multiply
    17,751.63x = 26,631.62 × 5,271.76
  4. Step 4: Simplify right side
    17,751.63x = 140,395,509.05
  5. Step 5: Solve for x
    x = 140,395,509.05/17,751.63
  6. Step 6: Final answer
    x = 7,908.88

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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.