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Finding the Fourth Proportional to 92,145.30, 138,023.55 and 76,593.30

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Solution

The fourth proportional to 92,145.30, 138,023.55 and 76,593.30 is: 114,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,145.30 : 138,023.55 = 76,593.30 : x
  2. Step 2: Convert to fraction form
    92,145.30/138,023.55 = 76,593.30/x
  3. Step 3: Cross multiply
    92,145.30x = 138,023.55 × 76,593.30
  4. Step 4: Simplify right side
    92,145.30x = 10,571,679,172.22
  5. Step 5: Solve for x
    x = 10,571,679,172.22/92,145.30
  6. Step 6: Final answer
    x = 114,728.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.