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Finding the Fourth Proportional to 14,860.90, 20,505.49 and 8,892.30

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Solution

The fourth proportional to 14,860.90, 20,505.49 and 8,892.30 is: 12,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,860.90 : 20,505.49 = 8,892.30 : x
  2. Step 2: Convert to fraction form
    14,860.90/20,505.49 = 8,892.30/x
  3. Step 3: Cross multiply
    14,860.90x = 20,505.49 × 8,892.30
  4. Step 4: Simplify right side
    14,860.90x = 182,340,968.73
  5. Step 5: Solve for x
    x = 182,340,968.73/14,860.90
  6. Step 6: Final answer
    x = 12,269.85

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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.