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Finding the Fourth Proportional to 21,602.01, 32,373.86 and 11,221.05

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Solution

The fourth proportional to 21,602.01, 32,373.86 and 11,221.05 is: 16,816.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.01 : 32,373.86 = 11,221.05 : x
  2. Step 2: Convert to fraction form
    21,602.01/32,373.86 = 11,221.05/x
  3. Step 3: Cross multiply
    21,602.01x = 32,373.86 × 11,221.05
  4. Step 4: Simplify right side
    21,602.01x = 363,268,645.65
  5. Step 5: Solve for x
    x = 363,268,645.65/21,602.01
  6. Step 6: Final answer
    x = 16,816.43

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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.