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Finding the Fourth Proportional to 21,559.68, 29,736.44 and 14,847.44

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Solution

The fourth proportional to 21,559.68, 29,736.44 and 14,847.44 is: 20,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.68 : 29,736.44 = 14,847.44 : x
  2. Step 2: Convert to fraction form
    21,559.68/29,736.44 = 14,847.44/x
  3. Step 3: Cross multiply
    21,559.68x = 29,736.44 × 14,847.44
  4. Step 4: Simplify right side
    21,559.68x = 441,510,008.71
  5. Step 5: Solve for x
    x = 441,510,008.71/21,559.68
  6. Step 6: Final answer
    x = 20,478.50

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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.