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Finding the Fourth Proportional to 5,714.54, 7,886.31 and 3,196.64

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Solution

The fourth proportional to 5,714.54, 7,886.31 and 3,196.64 is: 4,411.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,714.54 : 7,886.31 = 3,196.64 : x
  2. Step 2: Convert to fraction form
    5,714.54/7,886.31 = 3,196.64/x
  3. Step 3: Cross multiply
    5,714.54x = 7,886.31 × 3,196.64
  4. Step 4: Simplify right side
    5,714.54x = 25,209,694.00
  5. Step 5: Solve for x
    x = 25,209,694.00/5,714.54
  6. Step 6: Final answer
    x = 4,411.50

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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.