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Finding the Fourth Proportional to 14,874.90, 20,520.20 and 8,583.63

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Solution

The fourth proportional to 14,874.90, 20,520.20 and 8,583.63 is: 11,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,874.90 : 20,520.20 = 8,583.63 : x
  2. Step 2: Convert to fraction form
    14,874.90/20,520.20 = 8,583.63/x
  3. Step 3: Cross multiply
    14,874.90x = 20,520.20 × 8,583.63
  4. Step 4: Simplify right side
    14,874.90x = 176,137,701.73
  5. Step 5: Solve for x
    x = 176,137,701.73/14,874.90
  6. Step 6: Final answer
    x = 11,841.27

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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.