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Finding the Fourth Proportional to 68,236.02, 93,483.68 and 65,679.26

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Solution

The fourth proportional to 68,236.02, 93,483.68 and 65,679.26 is: 89,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,236.02 : 93,483.68 = 65,679.26 : x
  2. Step 2: Convert to fraction form
    68,236.02/93,483.68 = 65,679.26/x
  3. Step 3: Cross multiply
    68,236.02x = 93,483.68 × 65,679.26
  4. Step 4: Simplify right side
    68,236.02x = 6,139,938,128.66
  5. Step 5: Solve for x
    x = 6,139,938,128.66/68,236.02
  6. Step 6: Final answer
    x = 89,980.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.