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Finding the Fourth Proportional to 490,791.95, 736,204.29 and 135,776.24

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Solution

The fourth proportional to 490,791.95, 736,204.29 and 135,776.24 is: 203,668.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,791.95 : 736,204.29 = 135,776.24 : x
  2. Step 2: Convert to fraction form
    490,791.95/736,204.29 = 135,776.24/x
  3. Step 3: Cross multiply
    490,791.95x = 736,204.29 × 135,776.24
  4. Step 4: Simplify right side
    490,791.95x = 99,959,050,368.07
  5. Step 5: Solve for x
    x = 99,959,050,368.07/490,791.95
  6. Step 6: Final answer
    x = 203,668.89

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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.