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Finding the Fourth Proportional to 21,672.96, 32,509.92 and 6,090.24

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Solution

The fourth proportional to 21,672.96, 32,509.92 and 6,090.24 is: 9,135.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.96 : 32,509.92 = 6,090.24 : x
  2. Step 2: Convert to fraction form
    21,672.96/32,509.92 = 6,090.24/x
  3. Step 3: Cross multiply
    21,672.96x = 32,509.92 × 6,090.24
  4. Step 4: Simplify right side
    21,672.96x = 197,993,215.18
  5. Step 5: Solve for x
    x = 197,993,215.18/21,672.96
  6. Step 6: Final answer
    x = 9,135.49

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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.