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Finding the Fourth Proportional to 8,466.40, 11,683.26 and 4,929.40

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Solution

The fourth proportional to 8,466.40, 11,683.26 and 4,929.40 is: 6,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.40 : 11,683.26 = 4,929.40 : x
  2. Step 2: Convert to fraction form
    8,466.40/11,683.26 = 4,929.40/x
  3. Step 3: Cross multiply
    8,466.40x = 11,683.26 × 4,929.40
  4. Step 4: Simplify right side
    8,466.40x = 57,591,461.84
  5. Step 5: Solve for x
    x = 57,591,461.84/8,466.40
  6. Step 6: Final answer
    x = 6,802.36

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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.