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Finding the Fourth Proportional to 43,189.80, 64,792.86 and 16,892.88

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Solution

The fourth proportional to 43,189.80, 64,792.86 and 16,892.88 is: 25,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,189.80 : 64,792.86 = 16,892.88 : x
  2. Step 2: Convert to fraction form
    43,189.80/64,792.86 = 16,892.88/x
  3. Step 3: Cross multiply
    43,189.80x = 64,792.86 × 16,892.88
  4. Step 4: Simplify right side
    43,189.80x = 1,094,537,684.87
  5. Step 5: Solve for x
    x = 1,094,537,684.87/43,189.80
  6. Step 6: Final answer
    x = 25,342.51

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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.