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Finding the Fourth Proportional to 269,887.76, 372,443.28 and 149,036.68

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Solution

The fourth proportional to 269,887.76, 372,443.28 and 149,036.68 is: 205,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,887.76 : 372,443.28 = 149,036.68 : x
  2. Step 2: Convert to fraction form
    269,887.76/372,443.28 = 149,036.68/x
  3. Step 3: Cross multiply
    269,887.76x = 372,443.28 × 149,036.68
  4. Step 4: Simplify right side
    269,887.76x = 55,507,709,939.51
  5. Step 5: Solve for x
    x = 55,507,709,939.51/269,887.76
  6. Step 6: Final answer
    x = 205,669.61

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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.