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Finding the Fourth Proportional to 495,647.38, 743,499.15 and 140,633.38

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Solution

The fourth proportional to 495,647.38, 743,499.15 and 140,633.38 is: 210,958.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,647.38 : 743,499.15 = 140,633.38 : x
  2. Step 2: Convert to fraction form
    495,647.38/743,499.15 = 140,633.38/x
  3. Step 3: Cross multiply
    495,647.38x = 743,499.15 × 140,633.38
  4. Step 4: Simplify right side
    495,647.38x = 104,560,798,491.63
  5. Step 5: Solve for x
    x = 104,560,798,491.63/495,647.38
  6. Step 6: Final answer
    x = 210,958.04

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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.