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Finding the Fourth Proportional to 693,853.82, 957,554.83 and 421,876.68

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Solution

The fourth proportional to 693,853.82, 957,554.83 and 421,876.68 is: 582,212.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,853.82 : 957,554.83 = 421,876.68 : x
  2. Step 2: Convert to fraction form
    693,853.82/957,554.83 = 421,876.68/x
  3. Step 3: Cross multiply
    693,853.82x = 957,554.83 × 421,876.68
  4. Step 4: Simplify right side
    693,853.82x = 403,970,052,598.36
  5. Step 5: Solve for x
    x = 403,970,052,598.36/693,853.82
  6. Step 6: Final answer
    x = 582,212.05

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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.