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Finding the Fourth Proportional to 7,512.76, 10,367.62 and 4,200.76

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Solution

The fourth proportional to 7,512.76, 10,367.62 and 4,200.76 is: 5,797.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,512.76 : 10,367.62 = 4,200.76 : x
  2. Step 2: Convert to fraction form
    7,512.76/10,367.62 = 4,200.76/x
  3. Step 3: Cross multiply
    7,512.76x = 10,367.62 × 4,200.76
  4. Step 4: Simplify right side
    7,512.76x = 43,551,883.39
  5. Step 5: Solve for x
    x = 43,551,883.39/7,512.76
  6. Step 6: Final answer
    x = 5,797.06

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Half scale
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Double scale
Find fourth proportional to 7,513.76, 10,369 and 4,201.76
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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.