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Finding the Fourth Proportional to 411,120.94, 616,787.52 and 126,805.06

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Solution

The fourth proportional to 411,120.94, 616,787.52 and 126,805.06 is: 190,240.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,120.94 : 616,787.52 = 126,805.06 : x
  2. Step 2: Convert to fraction form
    411,120.94/616,787.52 = 126,805.06/x
  3. Step 3: Cross multiply
    411,120.94x = 616,787.52 × 126,805.06
  4. Step 4: Simplify right side
    411,120.94x = 78,211,778,480.85
  5. Step 5: Solve for x
    x = 78,211,778,480.85/411,120.94
  6. Step 6: Final answer
    x = 190,240.32

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1.5x scale

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.