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Finding the Fourth Proportional to 65,735.80, 98,603.70 and 40,933.60

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Solution

The fourth proportional to 65,735.80, 98,603.70 and 40,933.60 is: 61,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.80 : 98,603.70 = 40,933.60 : x
  2. Step 2: Convert to fraction form
    65,735.80/98,603.70 = 40,933.60/x
  3. Step 3: Cross multiply
    65,735.80x = 98,603.70 × 40,933.60
  4. Step 4: Simplify right side
    65,735.80x = 4,036,204,414.32
  5. Step 5: Solve for x
    x = 4,036,204,414.32/65,735.80
  6. Step 6: Final answer
    x = 61,400.40

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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.