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Finding the Fourth Proportional to 134,644.44, 185,808.62 and 74,215.20

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Solution

The fourth proportional to 134,644.44, 185,808.62 and 74,215.20 is: 102,416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,644.44 : 185,808.62 = 74,215.20 : x
  2. Step 2: Convert to fraction form
    134,644.44/185,808.62 = 74,215.20/x
  3. Step 3: Cross multiply
    134,644.44x = 185,808.62 × 74,215.20
  4. Step 4: Simplify right side
    134,644.44x = 13,789,824,080.56
  5. Step 5: Solve for x
    x = 13,789,824,080.56/134,644.44
  6. Step 6: Final answer
    x = 102,416.59

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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.