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Finding the Fourth Proportional to 65,639.60, 98,313.60 and 53,975.60

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Solution

The fourth proportional to 65,639.60, 98,313.60 and 53,975.60 is: 80,843.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,639.60 : 98,313.60 = 53,975.60 : x
  2. Step 2: Convert to fraction form
    65,639.60/98,313.60 = 53,975.60/x
  3. Step 3: Cross multiply
    65,639.60x = 98,313.60 × 53,975.60
  4. Step 4: Simplify right side
    65,639.60x = 5,306,535,548.16
  5. Step 5: Solve for x
    x = 5,306,535,548.16/65,639.60
  6. Step 6: Final answer
    x = 80,843.51

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1.5x scale

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.