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Finding the Fourth Proportional to 9,927.16, 13,696.66 and 6,392.42

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Solution

The fourth proportional to 9,927.16, 13,696.66 and 6,392.42 is: 8,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,927.16 : 13,696.66 = 6,392.42 : x
  2. Step 2: Convert to fraction form
    9,927.16/13,696.66 = 6,392.42/x
  3. Step 3: Cross multiply
    9,927.16x = 13,696.66 × 6,392.42
  4. Step 4: Simplify right side
    9,927.16x = 87,554,803.32
  5. Step 5: Solve for x
    x = 87,554,803.32/9,927.16
  6. Step 6: Final answer
    x = 8,819.72

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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.