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Finding the Fourth Proportional to 73,450.80, 100,701.98 and 72,122.20

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Solution

The fourth proportional to 73,450.80, 100,701.98 and 72,122.20 is: 98,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,450.80 : 100,701.98 = 72,122.20 : x
  2. Step 2: Convert to fraction form
    73,450.80/100,701.98 = 72,122.20/x
  3. Step 3: Cross multiply
    73,450.80x = 100,701.98 × 72,122.20
  4. Step 4: Simplify right side
    73,450.80x = 7,262,847,477.84
  5. Step 5: Solve for x
    x = 7,262,847,477.84/73,450.80
  6. Step 6: Final answer
    x = 98,880.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.