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Finding the Fourth Proportional to 74,791.68, 103,208.64 and 46,496.88

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Solution

The fourth proportional to 74,791.68, 103,208.64 and 46,496.88 is: 64,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,791.68 : 103,208.64 = 46,496.88 : x
  2. Step 2: Convert to fraction form
    74,791.68/103,208.64 = 46,496.88/x
  3. Step 3: Cross multiply
    74,791.68x = 103,208.64 × 46,496.88
  4. Step 4: Simplify right side
    74,791.68x = 4,798,879,749.04
  5. Step 5: Solve for x
    x = 4,798,879,749.04/74,791.68
  6. Step 6: Final answer
    x = 64,163.28

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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.