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Finding the Fourth Proportional to 412,185.62, 618,317.58 and 127,879.26

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Solution

The fourth proportional to 412,185.62, 618,317.58 and 127,879.26 is: 191,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,185.62 : 618,317.58 = 127,879.26 : x
  2. Step 2: Convert to fraction form
    412,185.62/618,317.58 = 127,879.26/x
  3. Step 3: Cross multiply
    412,185.62x = 618,317.58 × 127,879.26
  4. Step 4: Simplify right side
    412,185.62x = 79,069,994,575.39
  5. Step 5: Solve for x
    x = 79,069,994,575.39/412,185.62
  6. Step 6: Final answer
    x = 191,831.04

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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.