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Finding the Fourth Proportional to 9,967.58, 13,754.07 and 5,718.42

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Solution

The fourth proportional to 9,967.58, 13,754.07 and 5,718.42 is: 7,890.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,967.58 : 13,754.07 = 5,718.42 : x
  2. Step 2: Convert to fraction form
    9,967.58/13,754.07 = 5,718.42/x
  3. Step 3: Cross multiply
    9,967.58x = 13,754.07 × 5,718.42
  4. Step 4: Simplify right side
    9,967.58x = 78,651,548.97
  5. Step 5: Solve for x
    x = 78,651,548.97/9,967.58
  6. Step 6: Final answer
    x = 7,890.74

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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.