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Finding the Fourth Proportional to 403,138.22, 556,144.62 and 259,944.26

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Solution

The fourth proportional to 403,138.22, 556,144.62 and 259,944.26 is: 358,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,138.22 : 556,144.62 = 259,944.26 : x
  2. Step 2: Convert to fraction form
    403,138.22/556,144.62 = 259,944.26/x
  3. Step 3: Cross multiply
    403,138.22x = 556,144.62 × 259,944.26
  4. Step 4: Simplify right side
    403,138.22x = 144,566,601,698.88
  5. Step 5: Solve for x
    x = 144,566,601,698.88/403,138.22
  6. Step 6: Final answer
    x = 358,603.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.