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Finding the Fourth Proportional to 21,475.60, 32,213.40 and 14,914.60

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Solution

The fourth proportional to 21,475.60, 32,213.40 and 14,914.60 is: 22,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.60 : 32,213.40 = 14,914.60 : x
  2. Step 2: Convert to fraction form
    21,475.60/32,213.40 = 14,914.60/x
  3. Step 3: Cross multiply
    21,475.60x = 32,213.40 × 14,914.60
  4. Step 4: Simplify right side
    21,475.60x = 480,449,975.64
  5. Step 5: Solve for x
    x = 480,449,975.64/21,475.60
  6. Step 6: Final answer
    x = 22,371.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.