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Finding the Fourth Proportional to 8,872.34, 12,243.51 and 4,893.22

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Solution

The fourth proportional to 8,872.34, 12,243.51 and 4,893.22 is: 6,752.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.34 : 12,243.51 = 4,893.22 : x
  2. Step 2: Convert to fraction form
    8,872.34/12,243.51 = 4,893.22/x
  3. Step 3: Cross multiply
    8,872.34x = 12,243.51 × 4,893.22
  4. Step 4: Simplify right side
    8,872.34x = 59,910,188.00
  5. Step 5: Solve for x
    x = 59,910,188.00/8,872.34
  6. Step 6: Final answer
    x = 6,752.47

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Double scale
Find fourth proportional to 8,873.34, 12,244.89 and 4,894.22
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1.5x scale

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.