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Finding the Fourth Proportional to 21,995.26, 32,995.86 and 6,412.76

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Solution

The fourth proportional to 21,995.26, 32,995.86 and 6,412.76 is: 9,620.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.26 : 32,995.86 = 6,412.76 : x
  2. Step 2: Convert to fraction form
    21,995.26/32,995.86 = 6,412.76/x
  3. Step 3: Cross multiply
    21,995.26x = 32,995.86 × 6,412.76
  4. Step 4: Simplify right side
    21,995.26x = 211,594,531.17
  5. Step 5: Solve for x
    x = 211,594,531.17/21,995.26
  6. Step 6: Final answer
    x = 9,620.01

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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.