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Finding the Fourth Proportional to 5,707.80, 8,561.70 and 4,800.60

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Solution

The fourth proportional to 5,707.80, 8,561.70 and 4,800.60 is: 7,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,707.80 : 8,561.70 = 4,800.60 : x
  2. Step 2: Convert to fraction form
    5,707.80/8,561.70 = 4,800.60/x
  3. Step 3: Cross multiply
    5,707.80x = 8,561.70 × 4,800.60
  4. Step 4: Simplify right side
    5,707.80x = 41,101,297.02
  5. Step 5: Solve for x
    x = 41,101,297.02/5,707.80
  6. Step 6: Final answer
    x = 7,200.90

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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.