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Finding the Fourth Proportional to 289,189.00, 399,080.49 and 161,864.59

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Solution

The fourth proportional to 289,189.00, 399,080.49 and 161,864.59 is: 223,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,189.00 : 399,080.49 = 161,864.59 : x
  2. Step 2: Convert to fraction form
    289,189.00/399,080.49 = 161,864.59/x
  3. Step 3: Cross multiply
    289,189.00x = 399,080.49 × 161,864.59
  4. Step 4: Simplify right side
    289,189.00x = 64,597,000,961.37
  5. Step 5: Solve for x
    x = 64,597,000,961.37/289,189.00
  6. Step 6: Final answer
    x = 223,372.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.