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Finding the Fourth Proportional to 269,678.67, 404,388.75 and 127,405.51

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Solution

The fourth proportional to 269,678.67, 404,388.75 and 127,405.51 is: 191,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,678.67 : 404,388.75 = 127,405.51 : x
  2. Step 2: Convert to fraction form
    269,678.67/404,388.75 = 127,405.51/x
  3. Step 3: Cross multiply
    269,678.67x = 404,388.75 × 127,405.51
  4. Step 4: Simplify right side
    269,678.67x = 51,521,354,398.81
  5. Step 5: Solve for x
    x = 51,521,354,398.81/269,678.67
  6. Step 6: Final answer
    x = 191,047.20

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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.