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Finding the Fourth Proportional to 69,788.99, 104,673.92 and 30,340.98

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Solution

The fourth proportional to 69,788.99, 104,673.92 and 30,340.98 is: 45,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,788.99 : 104,673.92 = 30,340.98 : x
  2. Step 2: Convert to fraction form
    69,788.99/104,673.92 = 30,340.98/x
  3. Step 3: Cross multiply
    69,788.99x = 104,673.92 × 30,340.98
  4. Step 4: Simplify right side
    69,788.99x = 3,175,909,332.20
  5. Step 5: Solve for x
    x = 3,175,909,332.20/69,788.99
  6. Step 6: Final answer
    x = 45,507.31

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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.