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Finding the Fourth Proportional to 289,772.70, 434,853.45 and 171,318.30

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Solution

The fourth proportional to 289,772.70, 434,853.45 and 171,318.30 is: 257,092.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,772.70 : 434,853.45 = 171,318.30 : x
  2. Step 2: Convert to fraction form
    289,772.70/434,853.45 = 171,318.30/x
  3. Step 3: Cross multiply
    289,772.70x = 434,853.45 × 171,318.30
  4. Step 4: Simplify right side
    289,772.70x = 74,498,353,803.14
  5. Step 5: Solve for x
    x = 74,498,353,803.14/289,772.70
  6. Step 6: Final answer
    x = 257,092.38

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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.