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Finding the Fourth Proportional to 415,025.60, 621,104.80 and 248,932.80

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Solution

The fourth proportional to 415,025.60, 621,104.80 and 248,932.80 is: 372,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,025.60 : 621,104.80 = 248,932.80 : x
  2. Step 2: Convert to fraction form
    415,025.60/621,104.80 = 248,932.80/x
  3. Step 3: Cross multiply
    415,025.60x = 621,104.80 × 248,932.80
  4. Step 4: Simplify right side
    415,025.60x = 154,613,356,957.44
  5. Step 5: Solve for x
    x = 154,613,356,957.44/415,025.60
  6. Step 6: Final answer
    x = 372,539.33

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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.