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Finding the Fourth Proportional to 8,664.32, 12,995.12 and 2,423.67

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Solution

The fourth proportional to 8,664.32, 12,995.12 and 2,423.67 is: 3,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.32 : 12,995.12 = 2,423.67 : x
  2. Step 2: Convert to fraction form
    8,664.32/12,995.12 = 2,423.67/x
  3. Step 3: Cross multiply
    8,664.32x = 12,995.12 × 2,423.67
  4. Step 4: Simplify right side
    8,664.32x = 31,495,870.37
  5. Step 5: Solve for x
    x = 31,495,870.37/8,664.32
  6. Step 6: Final answer
    x = 3,635.13

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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.