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Finding the Fourth Proportional to 368,441.80, 552,662.70 and 256,467.40

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Solution

The fourth proportional to 368,441.80, 552,662.70 and 256,467.40 is: 384,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,441.80 : 552,662.70 = 256,467.40 : x
  2. Step 2: Convert to fraction form
    368,441.80/552,662.70 = 256,467.40/x
  3. Step 3: Cross multiply
    368,441.80x = 552,662.70 × 256,467.40
  4. Step 4: Simplify right side
    368,441.80x = 141,739,965,745.98
  5. Step 5: Solve for x
    x = 141,739,965,745.98/368,441.80
  6. Step 6: Final answer
    x = 384,701.10

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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.