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Finding the Fourth Proportional to 319,273.40, 440,649.78 and 192,019.16

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Solution

The fourth proportional to 319,273.40, 440,649.78 and 192,019.16 is: 265,018.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,273.40 : 440,649.78 = 192,019.16 : x
  2. Step 2: Convert to fraction form
    319,273.40/440,649.78 = 192,019.16/x
  3. Step 3: Cross multiply
    319,273.40x = 440,649.78 × 192,019.16
  4. Step 4: Simplify right side
    319,273.40x = 84,613,200,609.78
  5. Step 5: Solve for x
    x = 84,613,200,609.78/319,273.40
  6. Step 6: Final answer
    x = 265,018.01

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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.