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Finding the Fourth Proportional to 98,112.10, 146,840.10 and 68,587.60

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Solution

The fourth proportional to 98,112.10, 146,840.10 and 68,587.60 is: 102,652.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,112.10 : 146,840.10 = 68,587.60 : x
  2. Step 2: Convert to fraction form
    98,112.10/146,840.10 = 68,587.60/x
  3. Step 3: Cross multiply
    98,112.10x = 146,840.10 × 68,587.60
  4. Step 4: Simplify right side
    98,112.10x = 10,071,410,042.76
  5. Step 5: Solve for x
    x = 10,071,410,042.76/98,112.10
  6. Step 6: Final answer
    x = 102,652.07

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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.