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Finding the Fourth Proportional to 6,696.84, 9,240.54 and 4,178.54

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Solution

The fourth proportional to 6,696.84, 9,240.54 and 4,178.54 is: 5,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,696.84 : 9,240.54 = 4,178.54 : x
  2. Step 2: Convert to fraction form
    6,696.84/9,240.54 = 4,178.54/x
  3. Step 3: Cross multiply
    6,696.84x = 9,240.54 × 4,178.54
  4. Step 4: Simplify right side
    6,696.84x = 38,611,966.01
  5. Step 5: Solve for x
    x = 38,611,966.01/6,696.84
  6. Step 6: Final answer
    x = 5,765.70

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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.