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Finding the Fourth Proportional to 373,189.70, 514,982.35 and 212,022.38

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Solution

The fourth proportional to 373,189.70, 514,982.35 and 212,022.38 is: 292,579.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,189.70 : 514,982.35 = 212,022.38 : x
  2. Step 2: Convert to fraction form
    373,189.70/514,982.35 = 212,022.38/x
  3. Step 3: Cross multiply
    373,189.70x = 514,982.35 × 212,022.38
  4. Step 4: Simplify right side
    373,189.70x = 109,187,783,504.99
  5. Step 5: Solve for x
    x = 109,187,783,504.99/373,189.70
  6. Step 6: Final answer
    x = 292,579.84

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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.