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Finding the Fourth Proportional to 423,196.75, 634,799.23 and 107,653.66

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Solution

The fourth proportional to 423,196.75, 634,799.23 and 107,653.66 is: 161,481.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,196.75 : 634,799.23 = 107,653.66 : x
  2. Step 2: Convert to fraction form
    423,196.75/634,799.23 = 107,653.66/x
  3. Step 3: Cross multiply
    423,196.75x = 634,799.23 × 107,653.66
  4. Step 4: Simplify right side
    423,196.75x = 68,338,458,618.55
  5. Step 5: Solve for x
    x = 68,338,458,618.55/423,196.75
  6. Step 6: Final answer
    x = 161,481.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.