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Finding the Fourth Proportional to 7,809.63, 11,714.42 and 1,966.24

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Solution

The fourth proportional to 7,809.63, 11,714.42 and 1,966.24 is: 2,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.63 : 11,714.42 = 1,966.24 : x
  2. Step 2: Convert to fraction form
    7,809.63/11,714.42 = 1,966.24/x
  3. Step 3: Cross multiply
    7,809.63x = 11,714.42 × 1,966.24
  4. Step 4: Simplify right side
    7,809.63x = 23,033,336.81
  5. Step 5: Solve for x
    x = 23,033,336.81/7,809.63
  6. Step 6: Final answer
    x = 2,949.35

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Double scale
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Similar ratio
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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.