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Finding the Fourth Proportional to 97,840.80, 146,372.40 and 84,837.60

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Solution

The fourth proportional to 97,840.80, 146,372.40 and 84,837.60 is: 126,919.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,840.80 : 146,372.40 = 84,837.60 : x
  2. Step 2: Convert to fraction form
    97,840.80/146,372.40 = 84,837.60/x
  3. Step 3: Cross multiply
    97,840.80x = 146,372.40 × 84,837.60
  4. Step 4: Simplify right side
    97,840.80x = 12,417,883,122.24
  5. Step 5: Solve for x
    x = 12,417,883,122.24/97,840.80
  6. Step 6: Final answer
    x = 126,919.27

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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.