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Finding the Fourth Proportional to 8,712.88, 12,023.78 and 4,733.99

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Solution

The fourth proportional to 8,712.88, 12,023.78 and 4,733.99 is: 6,532.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.88 : 12,023.78 = 4,733.99 : x
  2. Step 2: Convert to fraction form
    8,712.88/12,023.78 = 4,733.99/x
  3. Step 3: Cross multiply
    8,712.88x = 12,023.78 × 4,733.99
  4. Step 4: Simplify right side
    8,712.88x = 56,920,454.28
  5. Step 5: Solve for x
    x = 56,920,454.28/8,712.88
  6. Step 6: Final answer
    x = 6,532.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.