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Finding the Fourth Proportional to 19,897.34, 27,459.01 and 10,945.22

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Solution

The fourth proportional to 19,897.34, 27,459.01 and 10,945.22 is: 15,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.34 : 27,459.01 = 10,945.22 : x
  2. Step 2: Convert to fraction form
    19,897.34/27,459.01 = 10,945.22/x
  3. Step 3: Cross multiply
    19,897.34x = 27,459.01 × 10,945.22
  4. Step 4: Simplify right side
    19,897.34x = 300,544,905.43
  5. Step 5: Solve for x
    x = 300,544,905.43/19,897.34
  6. Step 6: Final answer
    x = 15,104.78

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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.