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Finding the Fourth Proportional to 305,468.48, 458,381.36 and 127,960.48

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Solution

The fourth proportional to 305,468.48, 458,381.36 and 127,960.48 is: 192,015.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,468.48 : 458,381.36 = 127,960.48 : x
  2. Step 2: Convert to fraction form
    305,468.48/458,381.36 = 127,960.48/x
  3. Step 3: Cross multiply
    305,468.48x = 458,381.36 × 127,960.48
  4. Step 4: Simplify right side
    305,468.48x = 58,654,698,848.65
  5. Step 5: Solve for x
    x = 58,654,698,848.65/305,468.48
  6. Step 6: Final answer
    x = 192,015.55

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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.