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Finding the Fourth Proportional to 38,663.44, 53,355.54 and 21,896.44

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Solution

The fourth proportional to 38,663.44, 53,355.54 and 21,896.44 is: 30,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,663.44 : 53,355.54 = 21,896.44 : x
  2. Step 2: Convert to fraction form
    38,663.44/53,355.54 = 21,896.44/x
  3. Step 3: Cross multiply
    38,663.44x = 53,355.54 × 21,896.44
  4. Step 4: Simplify right side
    38,663.44x = 1,168,296,329.00
  5. Step 5: Solve for x
    x = 1,168,296,329.00/38,663.44
  6. Step 6: Final answer
    x = 30,217.08

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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.