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Finding the Fourth Proportional to 446,786.40, 670,114.80 and 131,210.40

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Solution

The fourth proportional to 446,786.40, 670,114.80 and 131,210.40 is: 196,796.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,786.40 : 670,114.80 = 131,210.40 : x
  2. Step 2: Convert to fraction form
    446,786.40/670,114.80 = 131,210.40/x
  3. Step 3: Cross multiply
    446,786.40x = 670,114.80 × 131,210.40
  4. Step 4: Simplify right side
    446,786.40x = 87,926,030,953.92
  5. Step 5: Solve for x
    x = 87,926,030,953.92/446,786.40
  6. Step 6: Final answer
    x = 196,796.57

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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.