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Finding the Fourth Proportional to 14,994.90, 20,689.56 and 8,706.06

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Solution

The fourth proportional to 14,994.90, 20,689.56 and 8,706.06 is: 12,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,994.90 : 20,689.56 = 8,706.06 : x
  2. Step 2: Convert to fraction form
    14,994.90/20,689.56 = 8,706.06/x
  3. Step 3: Cross multiply
    14,994.90x = 20,689.56 × 8,706.06
  4. Step 4: Simplify right side
    14,994.90x = 180,124,550.73
  5. Step 5: Solve for x
    x = 180,124,550.73/14,994.90
  6. Step 6: Final answer
    x = 12,012.39

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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.