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Finding the Fourth Proportional to 355,174.90, 490,148.58 and 194,040.38

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Solution

The fourth proportional to 355,174.90, 490,148.58 and 194,040.38 is: 267,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,174.90 : 490,148.58 = 194,040.38 : x
  2. Step 2: Convert to fraction form
    355,174.90/490,148.58 = 194,040.38/x
  3. Step 3: Cross multiply
    355,174.90x = 490,148.58 × 194,040.38
  4. Step 4: Simplify right side
    355,174.90x = 95,108,618,672.68
  5. Step 5: Solve for x
    x = 95,108,618,672.68/355,174.90
  6. Step 6: Final answer
    x = 267,779.68

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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.