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Finding the Fourth Proportional to 38,873.25, 53,649.81 and 21,883.86

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Solution

The fourth proportional to 38,873.25, 53,649.81 and 21,883.86 is: 30,202.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,873.25 : 53,649.81 = 21,883.86 : x
  2. Step 2: Convert to fraction form
    38,873.25/53,649.81 = 21,883.86/x
  3. Step 3: Cross multiply
    38,873.25x = 53,649.81 × 21,883.86
  4. Step 4: Simplify right side
    38,873.25x = 1,174,064,931.07
  5. Step 5: Solve for x
    x = 1,174,064,931.07/38,873.25
  6. Step 6: Final answer
    x = 30,202.39

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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.