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Finding the Fourth Proportional to 9,406.68, 12,981.30 and 5,869.68

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Solution

The fourth proportional to 9,406.68, 12,981.30 and 5,869.68 is: 8,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,406.68 : 12,981.30 = 5,869.68 : x
  2. Step 2: Convert to fraction form
    9,406.68/12,981.30 = 5,869.68/x
  3. Step 3: Cross multiply
    9,406.68x = 12,981.30 × 5,869.68
  4. Step 4: Simplify right side
    9,406.68x = 76,196,076.98
  5. Step 5: Solve for x
    x = 76,196,076.98/9,406.68
  6. Step 6: Final answer
    x = 8,100.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.