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Finding the Fourth Proportional to 439,674.48, 659,289.96 and 313,242.48

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Solution

The fourth proportional to 439,674.48, 659,289.96 and 313,242.48 is: 469,705.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,674.48 : 659,289.96 = 313,242.48 : x
  2. Step 2: Convert to fraction form
    439,674.48/659,289.96 = 313,242.48/x
  3. Step 3: Cross multiply
    439,674.48x = 659,289.96 × 313,242.48
  4. Step 4: Simplify right side
    439,674.48x = 206,517,622,109.50
  5. Step 5: Solve for x
    x = 206,517,622,109.50/439,674.48
  6. Step 6: Final answer
    x = 469,705.73

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1.5x scale

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.