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Finding the Fourth Proportional to 92,078.69, 127,069.90 and 54,352.94

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Solution

The fourth proportional to 92,078.69, 127,069.90 and 54,352.94 is: 75,007.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,078.69 : 127,069.90 = 54,352.94 : x
  2. Step 2: Convert to fraction form
    92,078.69/127,069.90 = 54,352.94/x
  3. Step 3: Cross multiply
    92,078.69x = 127,069.90 × 54,352.94
  4. Step 4: Simplify right side
    92,078.69x = 6,906,621,879.27
  5. Step 5: Solve for x
    x = 6,906,621,879.27/92,078.69
  6. Step 6: Final answer
    x = 75,007.82

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1.5x scale

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.