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Finding the Fourth Proportional to 439,497.60, 659,246.40 and 186,712.80

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Solution

The fourth proportional to 439,497.60, 659,246.40 and 186,712.80 is: 280,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,497.60 : 659,246.40 = 186,712.80 : x
  2. Step 2: Convert to fraction form
    439,497.60/659,246.40 = 186,712.80/x
  3. Step 3: Cross multiply
    439,497.60x = 659,246.40 × 186,712.80
  4. Step 4: Simplify right side
    439,497.60x = 123,089,741,233.92
  5. Step 5: Solve for x
    x = 123,089,741,233.92/439,497.60
  6. Step 6: Final answer
    x = 280,069.20

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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.