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Finding the Fourth Proportional to 319,174.67, 440,640.95 and 211,891.38

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Solution

The fourth proportional to 319,174.67, 440,640.95 and 211,891.38 is: 292,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,174.67 : 440,640.95 = 211,891.38 : x
  2. Step 2: Convert to fraction form
    319,174.67/440,640.95 = 211,891.38/x
  3. Step 3: Cross multiply
    319,174.67x = 440,640.95 × 211,891.38
  4. Step 4: Simplify right side
    319,174.67x = 93,368,017,920.55
  5. Step 5: Solve for x
    x = 93,368,017,920.55/319,174.67
  6. Step 6: Final answer
    x = 292,529.54

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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.