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Finding the Fourth Proportional to 4,470.80, 6,706.20 and 4,179.20

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Solution

The fourth proportional to 4,470.80, 6,706.20 and 4,179.20 is: 6,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,470.80 : 6,706.20 = 4,179.20 : x
  2. Step 2: Convert to fraction form
    4,470.80/6,706.20 = 4,179.20/x
  3. Step 3: Cross multiply
    4,470.80x = 6,706.20 × 4,179.20
  4. Step 4: Simplify right side
    4,470.80x = 28,026,551.04
  5. Step 5: Solve for x
    x = 28,026,551.04/4,470.80
  6. Step 6: Final answer
    x = 6,268.80

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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.