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Finding the Fourth Proportional to 345,553.64, 518,400.87 and 195,860.78

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Solution

The fourth proportional to 345,553.64, 518,400.87 and 195,860.78 is: 293,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,553.64 : 518,400.87 = 195,860.78 : x
  2. Step 2: Convert to fraction form
    345,553.64/518,400.87 = 195,860.78/x
  3. Step 3: Cross multiply
    345,553.64x = 518,400.87 × 195,860.78
  4. Step 4: Simplify right side
    345,553.64x = 101,534,398,750.88
  5. Step 5: Solve for x
    x = 101,534,398,750.88/345,553.64
  6. Step 6: Final answer
    x = 293,831.08

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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.