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Finding the Fourth Proportional to 445,554.96, 668,507.40 and 196,062

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Solution

The fourth proportional to 445,554.96, 668,507.40 and 196,062 is: 294,169.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,554.96 : 668,507.40 = 196,062 : x
  2. Step 2: Convert to fraction form
    445,554.96/668,507.40 = 196,062/x
  3. Step 3: Cross multiply
    445,554.96x = 668,507.40 × 196,062
  4. Step 4: Simplify right side
    445,554.96x = 131,068,897,858.80
  5. Step 5: Solve for x
    x = 131,068,897,858.80/445,554.96
  6. Step 6: Final answer
    x = 294,169.99

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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.