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Finding the Fourth Proportional to 223,860.47, 308,917.11 and 121,885.62

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Solution

The fourth proportional to 223,860.47, 308,917.11 and 121,885.62 is: 168,196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,860.47 : 308,917.11 = 121,885.62 : x
  2. Step 2: Convert to fraction form
    223,860.47/308,917.11 = 121,885.62/x
  3. Step 3: Cross multiply
    223,860.47x = 308,917.11 × 121,885.62
  4. Step 4: Simplify right side
    223,860.47x = 37,652,553,480.96
  5. Step 5: Solve for x
    x = 37,652,553,480.96/223,860.47
  6. Step 6: Final answer
    x = 168,196.53

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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.