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Finding the Fourth Proportional to 468,699.20, 646,805.42 and 253,839.51

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Solution

The fourth proportional to 468,699.20, 646,805.42 and 253,839.51 is: 350,298.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,699.20 : 646,805.42 = 253,839.51 : x
  2. Step 2: Convert to fraction form
    468,699.20/646,805.42 = 253,839.51/x
  3. Step 3: Cross multiply
    468,699.20x = 646,805.42 × 253,839.51
  4. Step 4: Simplify right side
    468,699.20x = 164,184,770,878.14
  5. Step 5: Solve for x
    x = 164,184,770,878.14/468,699.20
  6. Step 6: Final answer
    x = 350,298.81

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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.