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Finding the Fourth Proportional to 8,743.56, 12,071.02 and 6,695.60

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Solution

The fourth proportional to 8,743.56, 12,071.02 and 6,695.60 is: 9,243.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.56 : 12,071.02 = 6,695.60 : x
  2. Step 2: Convert to fraction form
    8,743.56/12,071.02 = 6,695.60/x
  3. Step 3: Cross multiply
    8,743.56x = 12,071.02 × 6,695.60
  4. Step 4: Simplify right side
    8,743.56x = 80,822,721.51
  5. Step 5: Solve for x
    x = 80,822,721.51/8,743.56
  6. Step 6: Final answer
    x = 9,243.69

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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.