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Finding the Fourth Proportional to 178,968.68, 246,978.44 and 98,396.78

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Solution

The fourth proportional to 178,968.68, 246,978.44 and 98,396.78 is: 135,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,968.68 : 246,978.44 = 98,396.78 : x
  2. Step 2: Convert to fraction form
    178,968.68/246,978.44 = 98,396.78/x
  3. Step 3: Cross multiply
    178,968.68x = 246,978.44 × 98,396.78
  4. Step 4: Simplify right side
    178,968.68x = 24,301,883,225.42
  5. Step 5: Solve for x
    x = 24,301,883,225.42/178,968.68
  6. Step 6: Final answer
    x = 135,788.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.