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Finding the Fourth Proportional to 8,718.94, 12,031.05 and 5,892.46

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Solution

The fourth proportional to 8,718.94, 12,031.05 and 5,892.46 is: 8,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.94 : 12,031.05 = 5,892.46 : x
  2. Step 2: Convert to fraction form
    8,718.94/12,031.05 = 5,892.46/x
  3. Step 3: Cross multiply
    8,718.94x = 12,031.05 × 5,892.46
  4. Step 4: Simplify right side
    8,718.94x = 70,892,507.43
  5. Step 5: Solve for x
    x = 70,892,507.43/8,718.94
  6. Step 6: Final answer
    x = 8,130.86

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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.