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Finding the Fourth Proportional to 98,744.40, 148,116.60 and 60,690.60

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Solution

The fourth proportional to 98,744.40, 148,116.60 and 60,690.60 is: 91,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,744.40 : 148,116.60 = 60,690.60 : x
  2. Step 2: Convert to fraction form
    98,744.40/148,116.60 = 60,690.60/x
  3. Step 3: Cross multiply
    98,744.40x = 148,116.60 × 60,690.60
  4. Step 4: Simplify right side
    98,744.40x = 8,989,285,323.96
  5. Step 5: Solve for x
    x = 8,989,285,323.96/98,744.40
  6. Step 6: Final answer
    x = 91,035.90

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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.