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Finding the Fourth Proportional to 203,774.04, 305,661.42 and 70,654.56

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Solution

The fourth proportional to 203,774.04, 305,661.42 and 70,654.56 is: 105,981.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,774.04 : 305,661.42 = 70,654.56 : x
  2. Step 2: Convert to fraction form
    203,774.04/305,661.42 = 70,654.56/x
  3. Step 3: Cross multiply
    203,774.04x = 305,661.42 × 70,654.56
  4. Step 4: Simplify right side
    203,774.04x = 21,596,373,139.08
  5. Step 5: Solve for x
    x = 21,596,373,139.08/203,774.04
  6. Step 6: Final answer
    x = 105,981.96

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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.