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Finding the Fourth Proportional to 14,995.89, 20,695.14 and 8,622.41

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Solution

The fourth proportional to 14,995.89, 20,695.14 and 8,622.41 is: 11,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,995.89 : 20,695.14 = 8,622.41 : x
  2. Step 2: Convert to fraction form
    14,995.89/20,695.14 = 8,622.41/x
  3. Step 3: Cross multiply
    14,995.89x = 20,695.14 × 8,622.41
  4. Step 4: Simplify right side
    14,995.89x = 178,441,878.61
  5. Step 5: Solve for x
    x = 178,441,878.61/14,995.89
  6. Step 6: Final answer
    x = 11,899.39

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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.