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Finding the Fourth Proportional to 6,112.40, 8,576.80 and 6,112.40

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Solution

The fourth proportional to 6,112.40, 8,576.80 and 6,112.40 is: 8,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.40 : 8,576.80 = 6,112.40 : x
  2. Step 2: Convert to fraction form
    6,112.40/8,576.80 = 6,112.40/x
  3. Step 3: Cross multiply
    6,112.40x = 8,576.80 × 6,112.40
  4. Step 4: Simplify right side
    6,112.40x = 52,424,832.32
  5. Step 5: Solve for x
    x = 52,424,832.32/6,112.40
  6. Step 6: Final answer
    x = 8,576.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.