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Finding the Fourth Proportional to 8,865.14, 12,145.19 and 8,532.77

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Solution

The fourth proportional to 8,865.14, 12,145.19 and 8,532.77 is: 11,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.14 : 12,145.19 = 8,532.77 : x
  2. Step 2: Convert to fraction form
    8,865.14/12,145.19 = 8,532.77/x
  3. Step 3: Cross multiply
    8,865.14x = 12,145.19 × 8,532.77
  4. Step 4: Simplify right side
    8,865.14x = 103,632,009.49
  5. Step 5: Solve for x
    x = 103,632,009.49/8,865.14
  6. Step 6: Final answer
    x = 11,689.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.