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Finding the Fourth Proportional to 8,596.40, 12,880.20 and 5,673.20

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Solution

The fourth proportional to 8,596.40, 12,880.20 and 5,673.20 is: 8,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,596.40 : 12,880.20 = 5,673.20 : x
  2. Step 2: Convert to fraction form
    8,596.40/12,880.20 = 5,673.20/x
  3. Step 3: Cross multiply
    8,596.40x = 12,880.20 × 5,673.20
  4. Step 4: Simplify right side
    8,596.40x = 73,071,950.64
  5. Step 5: Solve for x
    x = 73,071,950.64/8,596.40
  6. Step 6: Final answer
    x = 8,500.30

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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.