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Finding the Fourth Proportional to 21,059.25, 29,027.12 and 14,928.99

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Solution

The fourth proportional to 21,059.25, 29,027.12 and 14,928.99 is: 20,577.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.25 : 29,027.12 = 14,928.99 : x
  2. Step 2: Convert to fraction form
    21,059.25/29,027.12 = 14,928.99/x
  3. Step 3: Cross multiply
    21,059.25x = 29,027.12 × 14,928.99
  4. Step 4: Simplify right side
    21,059.25x = 433,345,509.56
  5. Step 5: Solve for x
    x = 433,345,509.56/21,059.25
  6. Step 6: Final answer
    x = 20,577.44

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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.