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Finding the Fourth Proportional to 8,736.63, 12,055.95 and 4,959.60

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Solution

The fourth proportional to 8,736.63, 12,055.95 and 4,959.60 is: 6,843.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.63 : 12,055.95 = 4,959.60 : x
  2. Step 2: Convert to fraction form
    8,736.63/12,055.95 = 4,959.60/x
  3. Step 3: Cross multiply
    8,736.63x = 12,055.95 × 4,959.60
  4. Step 4: Simplify right side
    8,736.63x = 59,792,689.62
  5. Step 5: Solve for x
    x = 59,792,689.62/8,736.63
  6. Step 6: Final answer
    x = 6,843.91

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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.