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Finding the Fourth Proportional to 5,221.32, 7,826.94 and 1,756.68

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Solution

The fourth proportional to 5,221.32, 7,826.94 and 1,756.68 is: 2,633.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.32 : 7,826.94 = 1,756.68 : x
  2. Step 2: Convert to fraction form
    5,221.32/7,826.94 = 1,756.68/x
  3. Step 3: Cross multiply
    5,221.32x = 7,826.94 × 1,756.68
  4. Step 4: Simplify right side
    5,221.32x = 13,749,428.96
  5. Step 5: Solve for x
    x = 13,749,428.96/5,221.32
  6. Step 6: Final answer
    x = 2,633.32

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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.