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Finding the Fourth Proportional to 8,466.62, 11,685.36 and 4,931.90

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Solution

The fourth proportional to 8,466.62, 11,685.36 and 4,931.90 is: 6,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.62 : 11,685.36 = 4,931.90 : x
  2. Step 2: Convert to fraction form
    8,466.62/11,685.36 = 4,931.90/x
  3. Step 3: Cross multiply
    8,466.62x = 11,685.36 × 4,931.90
  4. Step 4: Simplify right side
    8,466.62x = 57,631,026.98
  5. Step 5: Solve for x
    x = 57,631,026.98/8,466.62
  6. Step 6: Final answer
    x = 6,806.85

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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.