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Finding the Fourth Proportional to 65,884.60, 98,826.90 and 36,287.20

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Solution

The fourth proportional to 65,884.60, 98,826.90 and 36,287.20 is: 54,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,884.60 : 98,826.90 = 36,287.20 : x
  2. Step 2: Convert to fraction form
    65,884.60/98,826.90 = 36,287.20/x
  3. Step 3: Cross multiply
    65,884.60x = 98,826.90 × 36,287.20
  4. Step 4: Simplify right side
    65,884.60x = 3,586,151,485.68
  5. Step 5: Solve for x
    x = 3,586,151,485.68/65,884.60
  6. Step 6: Final answer
    x = 54,430.80

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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.