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Finding the Fourth Proportional to 84,328.26, 126,492.42 and 21,998.22

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Solution

The fourth proportional to 84,328.26, 126,492.42 and 21,998.22 is: 32,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,328.26 : 126,492.42 = 21,998.22 : x
  2. Step 2: Convert to fraction form
    84,328.26/126,492.42 = 21,998.22/x
  3. Step 3: Cross multiply
    84,328.26x = 126,492.42 × 21,998.22
  4. Step 4: Simplify right side
    84,328.26x = 2,782,608,083.49
  5. Step 5: Solve for x
    x = 2,782,608,083.49/84,328.26
  6. Step 6: Final answer
    x = 32,997.34

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Half scale
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Double scale
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Similar ratio
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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.