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Finding the Fourth Proportional to 8,931.75, 13,398.27 and 2,357.88

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Solution

The fourth proportional to 8,931.75, 13,398.27 and 2,357.88 is: 3,536.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.75 : 13,398.27 = 2,357.88 : x
  2. Step 2: Convert to fraction form
    8,931.75/13,398.27 = 2,357.88/x
  3. Step 3: Cross multiply
    8,931.75x = 13,398.27 × 2,357.88
  4. Step 4: Simplify right side
    8,931.75x = 31,591,512.87
  5. Step 5: Solve for x
    x = 31,591,512.87/8,931.75
  6. Step 6: Final answer
    x = 3,536.99

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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.