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Finding the Fourth Proportional to 5,718.76, 8,579.56 and 4,071.22

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Solution

The fourth proportional to 5,718.76, 8,579.56 and 4,071.22 is: 6,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.76 : 8,579.56 = 4,071.22 : x
  2. Step 2: Convert to fraction form
    5,718.76/8,579.56 = 4,071.22/x
  3. Step 3: Cross multiply
    5,718.76x = 8,579.56 × 4,071.22
  4. Step 4: Simplify right side
    5,718.76x = 34,929,276.26
  5. Step 5: Solve for x
    x = 34,929,276.26/5,718.76
  6. Step 6: Final answer
    x = 6,107.84

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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.