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Finding the Fourth Proportional to 5,686.80, 8,530.20 and 3,062.40

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Solution

The fourth proportional to 5,686.80, 8,530.20 and 3,062.40 is: 4,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.80 : 8,530.20 = 3,062.40 : x
  2. Step 2: Convert to fraction form
    5,686.80/8,530.20 = 3,062.40/x
  3. Step 3: Cross multiply
    5,686.80x = 8,530.20 × 3,062.40
  4. Step 4: Simplify right side
    5,686.80x = 26,122,884.48
  5. Step 5: Solve for x
    x = 26,122,884.48/5,686.80
  6. Step 6: Final answer
    x = 4,593.60

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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.