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Finding the Fourth Proportional to 248,840.80, 373,261.20 and 185,855.20

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Solution

The fourth proportional to 248,840.80, 373,261.20 and 185,855.20 is: 278,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,840.80 : 373,261.20 = 185,855.20 : x
  2. Step 2: Convert to fraction form
    248,840.80/373,261.20 = 185,855.20/x
  3. Step 3: Cross multiply
    248,840.80x = 373,261.20 × 185,855.20
  4. Step 4: Simplify right side
    248,840.80x = 69,372,534,978.24
  5. Step 5: Solve for x
    x = 69,372,534,978.24/248,840.80
  6. Step 6: Final answer
    x = 278,782.80

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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.