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Finding the Fourth Proportional to 221,855.70, 332,783.55 and 79,700.70

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Solution

The fourth proportional to 221,855.70, 332,783.55 and 79,700.70 is: 119,551.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,855.70 : 332,783.55 = 79,700.70 : x
  2. Step 2: Convert to fraction form
    221,855.70/332,783.55 = 79,700.70/x
  3. Step 3: Cross multiply
    221,855.70x = 332,783.55 × 79,700.70
  4. Step 4: Simplify right side
    221,855.70x = 26,523,081,883.49
  5. Step 5: Solve for x
    x = 26,523,081,883.49/221,855.70
  6. Step 6: Final answer
    x = 119,551.05

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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.