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Finding the Fourth Proportional to 178,980.93, 246,991.46 and 98,407.76

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Solution

The fourth proportional to 178,980.93, 246,991.46 and 98,407.76 is: 135,801.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,980.93 : 246,991.46 = 98,407.76 : x
  2. Step 2: Convert to fraction form
    178,980.93/246,991.46 = 98,407.76/x
  3. Step 3: Cross multiply
    178,980.93x = 246,991.46 × 98,407.76
  4. Step 4: Simplify right side
    178,980.93x = 24,305,874,590.73
  5. Step 5: Solve for x
    x = 24,305,874,590.73/178,980.93
  6. Step 6: Final answer
    x = 135,801.48

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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.