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Finding the Fourth Proportional to 6,630.80, 9,967.80 and 4,696.40

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Solution

The fourth proportional to 6,630.80, 9,967.80 and 4,696.40 is: 7,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.80 : 9,967.80 = 4,696.40 : x
  2. Step 2: Convert to fraction form
    6,630.80/9,967.80 = 4,696.40/x
  3. Step 3: Cross multiply
    6,630.80x = 9,967.80 × 4,696.40
  4. Step 4: Simplify right side
    6,630.80x = 46,812,775.92
  5. Step 5: Solve for x
    x = 46,812,775.92/6,630.80
  6. Step 6: Final answer
    x = 7,059.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.