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Finding the Fourth Proportional to 98,412.26, 146,850.59 and 87,809.42

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Solution

The fourth proportional to 98,412.26, 146,850.59 and 87,809.42 is: 131,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,412.26 : 146,850.59 = 87,809.42 : x
  2. Step 2: Convert to fraction form
    98,412.26/146,850.59 = 87,809.42/x
  3. Step 3: Cross multiply
    98,412.26x = 146,850.59 × 87,809.42
  4. Step 4: Simplify right side
    98,412.26x = 12,894,863,961.26
  5. Step 5: Solve for x
    x = 12,894,863,961.26/98,412.26
  6. Step 6: Final answer
    x = 131,029.05

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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.