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Finding the Fourth Proportional to 8,712.28, 12,022.94 and 4,733.40

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Solution

The fourth proportional to 8,712.28, 12,022.94 and 4,733.40 is: 6,532.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.28 : 12,022.94 = 4,733.40 : x
  2. Step 2: Convert to fraction form
    8,712.28/12,022.94 = 4,733.40/x
  3. Step 3: Cross multiply
    8,712.28x = 12,022.94 × 4,733.40
  4. Step 4: Simplify right side
    8,712.28x = 56,909,384.20
  5. Step 5: Solve for x
    x = 56,909,384.20/8,712.28
  6. Step 6: Final answer
    x = 6,532.09

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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.