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Finding the Fourth Proportional to 228,570.93, 342,878.94 and 78,791.49

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Solution

The fourth proportional to 228,570.93, 342,878.94 and 78,791.49 is: 118,195.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,570.93 : 342,878.94 = 78,791.49 : x
  2. Step 2: Convert to fraction form
    228,570.93/342,878.94 = 78,791.49/x
  3. Step 3: Cross multiply
    228,570.93x = 342,878.94 × 78,791.49
  4. Step 4: Simplify right side
    228,570.93x = 27,015,942,572.22
  5. Step 5: Solve for x
    x = 27,015,942,572.22/228,570.93
  6. Step 6: Final answer
    x = 118,195.01

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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.