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Finding the Fourth Proportional to 289,789.70, 434,101.35 and 195,311.30

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Solution

The fourth proportional to 289,789.70, 434,101.35 and 195,311.30 is: 292,573.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,789.70 : 434,101.35 = 195,311.30 : x
  2. Step 2: Convert to fraction form
    289,789.70/434,101.35 = 195,311.30/x
  3. Step 3: Cross multiply
    289,789.70x = 434,101.35 × 195,311.30
  4. Step 4: Simplify right side
    289,789.70x = 84,784,899,000.26
  5. Step 5: Solve for x
    x = 84,784,899,000.26/289,789.70
  6. Step 6: Final answer
    x = 292,573.89

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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.