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Finding the Fourth Proportional to 193,398.76, 266,821.86 and 126,369.64

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Solution

The fourth proportional to 193,398.76, 266,821.86 and 126,369.64 is: 174,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,398.76 : 266,821.86 = 126,369.64 : x
  2. Step 2: Convert to fraction form
    193,398.76/266,821.86 = 126,369.64/x
  3. Step 3: Cross multiply
    193,398.76x = 266,821.86 × 126,369.64
  4. Step 4: Simplify right side
    193,398.76x = 33,718,182,392.33
  5. Step 5: Solve for x
    x = 33,718,182,392.33/193,398.76
  6. Step 6: Final answer
    x = 174,345.39

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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.