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Finding the Fourth Proportional to 21,367.20, 32,051.88 and 7,328.88

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Solution

The fourth proportional to 21,367.20, 32,051.88 and 7,328.88 is: 10,993.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.20 : 32,051.88 = 7,328.88 : x
  2. Step 2: Convert to fraction form
    21,367.20/32,051.88 = 7,328.88/x
  3. Step 3: Cross multiply
    21,367.20x = 32,051.88 × 7,328.88
  4. Step 4: Simplify right side
    21,367.20x = 234,904,382.29
  5. Step 5: Solve for x
    x = 234,904,382.29/21,367.20
  6. Step 6: Final answer
    x = 10,993.69

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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.