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Finding the Fourth Proportional to 178,978.44, 246,996 and 98,411.79

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Solution

The fourth proportional to 178,978.44, 246,996 and 98,411.79 is: 135,811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.44 : 246,996 = 98,411.79 : x
  2. Step 2: Convert to fraction form
    178,978.44/246,996 = 98,411.79/x
  3. Step 3: Cross multiply
    178,978.44x = 246,996 × 98,411.79
  4. Step 4: Simplify right side
    178,978.44x = 24,307,318,482.84
  5. Step 5: Solve for x
    x = 24,307,318,482.84/178,978.44
  6. Step 6: Final answer
    x = 135,811.43

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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.