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Finding the Fourth Proportional to 439,340.65, 658,881.79 and 186,619.13

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Solution

The fourth proportional to 439,340.65, 658,881.79 and 186,619.13 is: 279,873.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,340.65 : 658,881.79 = 186,619.13 : x
  2. Step 2: Convert to fraction form
    439,340.65/658,881.79 = 186,619.13/x
  3. Step 3: Cross multiply
    439,340.65x = 658,881.79 × 186,619.13
  4. Step 4: Simplify right side
    439,340.65x = 122,959,945,132.49
  5. Step 5: Solve for x
    x = 122,959,945,132.49/439,340.65
  6. Step 6: Final answer
    x = 279,873.82

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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.