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Finding the Fourth Proportional to 73,900.12, 110,851.10 and 21,310.06

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Solution

The fourth proportional to 73,900.12, 110,851.10 and 21,310.06 is: 31,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,900.12 : 110,851.10 = 21,310.06 : x
  2. Step 2: Convert to fraction form
    73,900.12/110,851.10 = 21,310.06/x
  3. Step 3: Cross multiply
    73,900.12x = 110,851.10 × 21,310.06
  4. Step 4: Simplify right side
    73,900.12x = 2,362,243,592.07
  5. Step 5: Solve for x
    x = 2,362,243,592.07/73,900.12
  6. Step 6: Final answer
    x = 31,965.36

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Why These Related Problems?

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