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Finding the Fourth Proportional to 8,588.60, 12,880.20 and 5,296.76

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Solution

The fourth proportional to 8,588.60, 12,880.20 and 5,296.76 is: 7,943.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,588.60 : 12,880.20 = 5,296.76 : x
  2. Step 2: Convert to fraction form
    8,588.60/12,880.20 = 5,296.76/x
  3. Step 3: Cross multiply
    8,588.60x = 12,880.20 × 5,296.76
  4. Step 4: Simplify right side
    8,588.60x = 68,223,328.15
  5. Step 5: Solve for x
    x = 68,223,328.15/8,588.60
  6. Step 6: Final answer
    x = 7,943.47

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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.