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Finding the Fourth Proportional to 7,915.54, 10,916.22 and 6,796.12

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Solution

The fourth proportional to 7,915.54, 10,916.22 and 6,796.12 is: 9,372.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.54 : 10,916.22 = 6,796.12 : x
  2. Step 2: Convert to fraction form
    7,915.54/10,916.22 = 6,796.12/x
  3. Step 3: Cross multiply
    7,915.54x = 10,916.22 × 6,796.12
  4. Step 4: Simplify right side
    7,915.54x = 74,187,941.07
  5. Step 5: Solve for x
    x = 74,187,941.07/7,915.54
  6. Step 6: Final answer
    x = 9,372.44

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.