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Finding the Fourth Proportional to 578,980.52, 798,988.74 and 324,333.80

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Solution

The fourth proportional to 578,980.52, 798,988.74 and 324,333.80 is: 447,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,980.52 : 798,988.74 = 324,333.80 : x
  2. Step 2: Convert to fraction form
    578,980.52/798,988.74 = 324,333.80/x
  3. Step 3: Cross multiply
    578,980.52x = 798,988.74 × 324,333.80
  4. Step 4: Simplify right side
    578,980.52x = 259,139,054,201.41
  5. Step 5: Solve for x
    x = 259,139,054,201.41/578,980.52
  6. Step 6: Final answer
    x = 447,578.19

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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.