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Finding the Fourth Proportional to 385,771.01, 578,376.11 and 161,195.72

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Solution

The fourth proportional to 385,771.01, 578,376.11 and 161,195.72 is: 241,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,771.01 : 578,376.11 = 161,195.72 : x
  2. Step 2: Convert to fraction form
    385,771.01/578,376.11 = 161,195.72/x
  3. Step 3: Cross multiply
    385,771.01x = 578,376.11 × 161,195.72
  4. Step 4: Simplify right side
    385,771.01x = 93,231,750,993.36
  5. Step 5: Solve for x
    x = 93,231,750,993.36/385,771.01
  6. Step 6: Final answer
    x = 241,676.41

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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.