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Finding the Fourth Proportional to 98,403.48, 146,837.46 and 87,800.58

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Solution

The fourth proportional to 98,403.48, 146,837.46 and 87,800.58 is: 131,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,403.48 : 146,837.46 = 87,800.58 : x
  2. Step 2: Convert to fraction form
    98,403.48/146,837.46 = 87,800.58/x
  3. Step 3: Cross multiply
    98,403.48x = 146,837.46 × 87,800.58
  4. Step 4: Simplify right side
    98,403.48x = 12,892,414,153.73
  5. Step 5: Solve for x
    x = 12,892,414,153.73/98,403.48
  6. Step 6: Final answer
    x = 131,015.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.