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Finding the Fourth Proportional to 21,998.03, 30,353.04 and 13,053.47

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Solution

The fourth proportional to 21,998.03, 30,353.04 and 13,053.47 is: 18,011.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.03 : 30,353.04 = 13,053.47 : x
  2. Step 2: Convert to fraction form
    21,998.03/30,353.04 = 13,053.47/x
  3. Step 3: Cross multiply
    21,998.03x = 30,353.04 × 13,053.47
  4. Step 4: Simplify right side
    21,998.03x = 396,212,345.28
  5. Step 5: Solve for x
    x = 396,212,345.28/21,998.03
  6. Step 6: Final answer
    x = 18,011.27

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.