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Finding the Fourth Proportional to 223,978.80, 335,968.20 and 57,766.80

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Solution

The fourth proportional to 223,978.80, 335,968.20 and 57,766.80 is: 86,650.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,978.80 : 335,968.20 = 57,766.80 : x
  2. Step 2: Convert to fraction form
    223,978.80/335,968.20 = 57,766.80/x
  3. Step 3: Cross multiply
    223,978.80x = 335,968.20 × 57,766.80
  4. Step 4: Simplify right side
    223,978.80x = 19,407,807,815.76
  5. Step 5: Solve for x
    x = 19,407,807,815.76/223,978.80
  6. Step 6: Final answer
    x = 86,650.20

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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.