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Finding the Fourth Proportional to 117,749.72, 162,446.70 and 66,751.64

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Solution

The fourth proportional to 117,749.72, 162,446.70 and 66,751.64 is: 92,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,749.72 : 162,446.70 = 66,751.64 : x
  2. Step 2: Convert to fraction form
    117,749.72/162,446.70 = 66,751.64/x
  3. Step 3: Cross multiply
    117,749.72x = 162,446.70 × 66,751.64
  4. Step 4: Simplify right side
    117,749.72x = 10,843,583,637.59
  5. Step 5: Solve for x
    x = 10,843,583,637.59/117,749.72
  6. Step 6: Final answer
    x = 92,090.10

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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.