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Finding the Fourth Proportional to 6,475.70, 9,713.55 and 6,220.55

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Solution

The fourth proportional to 6,475.70, 9,713.55 and 6,220.55 is: 9,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,475.70 : 9,713.55 = 6,220.55 : x
  2. Step 2: Convert to fraction form
    6,475.70/9,713.55 = 6,220.55/x
  3. Step 3: Cross multiply
    6,475.70x = 9,713.55 × 6,220.55
  4. Step 4: Simplify right side
    6,475.70x = 60,423,623.45
  5. Step 5: Solve for x
    x = 60,423,623.45/6,475.70
  6. Step 6: Final answer
    x = 9,330.83

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Half scale
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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.