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Finding the Fourth Proportional to 164,343.72, 226,790.64 and 92,721.90

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Solution

The fourth proportional to 164,343.72, 226,790.64 and 92,721.90 is: 127,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,343.72 : 226,790.64 = 92,721.90 : x
  2. Step 2: Convert to fraction form
    164,343.72/226,790.64 = 92,721.90/x
  3. Step 3: Cross multiply
    164,343.72x = 226,790.64 × 92,721.90
  4. Step 4: Simplify right side
    164,343.72x = 21,028,459,043.02
  5. Step 5: Solve for x
    x = 21,028,459,043.02/164,343.72
  6. Step 6: Final answer
    x = 127,954.14

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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.