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Finding the Fourth Proportional to 6,476.57, 9,714.85 and 1,859.57

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Solution

The fourth proportional to 6,476.57, 9,714.85 and 1,859.57 is: 2,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,476.57 : 9,714.85 = 1,859.57 : x
  2. Step 2: Convert to fraction form
    6,476.57/9,714.85 = 1,859.57/x
  3. Step 3: Cross multiply
    6,476.57x = 9,714.85 × 1,859.57
  4. Step 4: Simplify right side
    6,476.57x = 18,065,385.74
  5. Step 5: Solve for x
    x = 18,065,385.74/6,476.57
  6. Step 6: Final answer
    x = 2,789.35

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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.