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Finding the Fourth Proportional to 97,693.20, 146,539.80 and 82,486.80

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Solution

The fourth proportional to 97,693.20, 146,539.80 and 82,486.80 is: 123,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,693.20 : 146,539.80 = 82,486.80 : x
  2. Step 2: Convert to fraction form
    97,693.20/146,539.80 = 82,486.80/x
  3. Step 3: Cross multiply
    97,693.20x = 146,539.80 × 82,486.80
  4. Step 4: Simplify right side
    97,693.20x = 12,087,599,174.64
  5. Step 5: Solve for x
    x = 12,087,599,174.64/97,693.20
  6. Step 6: Final answer
    x = 123,730.20

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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.