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Finding the Fourth Proportional to 290,841.11, 401,384.97 and 161,803.89

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Solution

The fourth proportional to 290,841.11, 401,384.97 and 161,803.89 is: 223,302.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,841.11 : 401,384.97 = 161,803.89 : x
  2. Step 2: Convert to fraction form
    290,841.11/401,384.97 = 161,803.89/x
  3. Step 3: Cross multiply
    290,841.11x = 401,384.97 × 161,803.89
  4. Step 4: Simplify right side
    290,841.11x = 64,945,649,533.53
  5. Step 5: Solve for x
    x = 64,945,649,533.53/290,841.11
  6. Step 6: Final answer
    x = 223,302.85

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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.