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Finding the Fourth Proportional to 659,698.44, 989,612.46 and 186,387.48

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Solution

The fourth proportional to 659,698.44, 989,612.46 and 186,387.48 is: 279,599.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,698.44 : 989,612.46 = 186,387.48 : x
  2. Step 2: Convert to fraction form
    659,698.44/989,612.46 = 186,387.48/x
  3. Step 3: Cross multiply
    659,698.44x = 989,612.46 × 186,387.48
  4. Step 4: Simplify right side
    659,698.44x = 184,451,372,596.00
  5. Step 5: Solve for x
    x = 184,451,372,596.00/659,698.44
  6. Step 6: Final answer
    x = 279,599.53

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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.