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Finding the Fourth Proportional to 221,391.60, 332,087.40 and 73,647.60

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Solution

The fourth proportional to 221,391.60, 332,087.40 and 73,647.60 is: 110,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,391.60 : 332,087.40 = 73,647.60 : x
  2. Step 2: Convert to fraction form
    221,391.60/332,087.40 = 73,647.60/x
  3. Step 3: Cross multiply
    221,391.60x = 332,087.40 × 73,647.60
  4. Step 4: Simplify right side
    221,391.60x = 24,457,440,000.24
  5. Step 5: Solve for x
    x = 24,457,440,000.24/221,391.60
  6. Step 6: Final answer
    x = 110,471.40

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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.