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Finding the Fourth Proportional to 73,160.09, 109,689.71 and 28,791.93

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Solution

The fourth proportional to 73,160.09, 109,689.71 and 28,791.93 is: 43,168.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,160.09 : 109,689.71 = 28,791.93 : x
  2. Step 2: Convert to fraction form
    73,160.09/109,689.71 = 28,791.93/x
  3. Step 3: Cross multiply
    73,160.09x = 109,689.71 × 28,791.93
  4. Step 4: Simplify right side
    73,160.09x = 3,158,178,451.40
  5. Step 5: Solve for x
    x = 3,158,178,451.40/73,160.09
  6. Step 6: Final answer
    x = 43,168.05

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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.