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Finding the Fourth Proportional to 8,671.84, 13,029.20 and 5,553.24

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Solution

The fourth proportional to 8,671.84, 13,029.20 and 5,553.24 is: 8,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.84 : 13,029.20 = 5,553.24 : x
  2. Step 2: Convert to fraction form
    8,671.84/13,029.20 = 5,553.24/x
  3. Step 3: Cross multiply
    8,671.84x = 13,029.20 × 5,553.24
  4. Step 4: Simplify right side
    8,671.84x = 72,354,274.61
  5. Step 5: Solve for x
    x = 72,354,274.61/8,671.84
  6. Step 6: Final answer
    x = 8,343.59

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1.5x scale

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.