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Finding the Fourth Proportional to 48,990.40, 73,485.60 and 47,694.40

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Solution

The fourth proportional to 48,990.40, 73,485.60 and 47,694.40 is: 71,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,990.40 : 73,485.60 = 47,694.40 : x
  2. Step 2: Convert to fraction form
    48,990.40/73,485.60 = 47,694.40/x
  3. Step 3: Cross multiply
    48,990.40x = 73,485.60 × 47,694.40
  4. Step 4: Simplify right side
    48,990.40x = 3,504,851,600.64
  5. Step 5: Solve for x
    x = 3,504,851,600.64/48,990.40
  6. Step 6: Final answer
    x = 71,541.60

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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.