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Finding the Fourth Proportional to 393,654.45, 590,575.41 and 127,415.01

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Solution

The fourth proportional to 393,654.45, 590,575.41 and 127,415.01 is: 191,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,654.45 : 590,575.41 = 127,415.01 : x
  2. Step 2: Convert to fraction form
    393,654.45/590,575.41 = 127,415.01/x
  3. Step 3: Cross multiply
    393,654.45x = 590,575.41 × 127,415.01
  4. Step 4: Simplify right side
    393,654.45x = 75,248,171,770.90
  5. Step 5: Solve for x
    x = 75,248,171,770.90/393,654.45
  6. Step 6: Final answer
    x = 191,152.85

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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.