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Finding the Fourth Proportional to 505,078.75, 757,395.17 and 189,314.22

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Solution

The fourth proportional to 505,078.75, 757,395.17 and 189,314.22 is: 283,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,078.75 : 757,395.17 = 189,314.22 : x
  2. Step 2: Convert to fraction form
    505,078.75/757,395.17 = 189,314.22/x
  3. Step 3: Cross multiply
    505,078.75x = 757,395.17 × 189,314.22
  4. Step 4: Simplify right side
    505,078.75x = 143,385,675,603.68
  5. Step 5: Solve for x
    x = 143,385,675,603.68/505,078.75
  6. Step 6: Final answer
    x = 283,887.76

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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.