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Finding the Fourth Proportional to 403,561.44, 605,341.89 and 190,279.53

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Solution

The fourth proportional to 403,561.44, 605,341.89 and 190,279.53 is: 285,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,561.44 : 605,341.89 = 190,279.53 : x
  2. Step 2: Convert to fraction form
    403,561.44/605,341.89 = 190,279.53/x
  3. Step 3: Cross multiply
    403,561.44x = 605,341.89 × 190,279.53
  4. Step 4: Simplify right side
    403,561.44x = 115,184,170,318.51
  5. Step 5: Solve for x
    x = 115,184,170,318.51/403,561.44
  6. Step 6: Final answer
    x = 285,419.17

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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.