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Finding the Fourth Proportional to 9,307.26, 12,869.27 and 9,157.03

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Solution

The fourth proportional to 9,307.26, 12,869.27 and 9,157.03 is: 12,661.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,307.26 : 12,869.27 = 9,157.03 : x
  2. Step 2: Convert to fraction form
    9,307.26/12,869.27 = 9,157.03/x
  3. Step 3: Cross multiply
    9,307.26x = 12,869.27 × 9,157.03
  4. Step 4: Simplify right side
    9,307.26x = 117,844,181.34
  5. Step 5: Solve for x
    x = 117,844,181.34/9,307.26
  6. Step 6: Final answer
    x = 12,661.54

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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.