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Finding the Fourth Proportional to 46,272, 69,393.60 and 16,686

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Solution

The fourth proportional to 46,272, 69,393.60 and 16,686 is: 25,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,272 : 69,393.60 = 16,686 : x
  2. Step 2: Convert to fraction form
    46,272/69,393.60 = 16,686/x
  3. Step 3: Cross multiply
    46,272x = 69,393.60 × 16,686
  4. Step 4: Simplify right side
    46,272x = 1,157,901,609.60
  5. Step 5: Solve for x
    x = 1,157,901,609.60/46,272
  6. Step 6: Final answer
    x = 25,023.81

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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.