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Finding the Fourth Proportional to 248,990.76, 373,481.28 and 71,493.84

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Solution

The fourth proportional to 248,990.76, 373,481.28 and 71,493.84 is: 107,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,990.76 : 373,481.28 = 71,493.84 : x
  2. Step 2: Convert to fraction form
    248,990.76/373,481.28 = 71,493.84/x
  3. Step 3: Cross multiply
    248,990.76x = 373,481.28 × 71,493.84
  4. Step 4: Simplify right side
    248,990.76x = 26,701,610,875.32
  5. Step 5: Solve for x
    x = 26,701,610,875.32/248,990.76
  6. Step 6: Final answer
    x = 107,239.36

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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.