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Finding the Fourth Proportional to 263,503.82, 395,266.59 and 76,515.32

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Solution

The fourth proportional to 263,503.82, 395,266.59 and 76,515.32 is: 114,776.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,503.82 : 395,266.59 = 76,515.32 : x
  2. Step 2: Convert to fraction form
    263,503.82/395,266.59 = 76,515.32/x
  3. Step 3: Cross multiply
    263,503.82x = 395,266.59 × 76,515.32
  4. Step 4: Simplify right side
    263,503.82x = 30,243,947,642.83
  5. Step 5: Solve for x
    x = 30,243,947,642.83/263,503.82
  6. Step 6: Final answer
    x = 114,776.13

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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.