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Finding the Fourth Proportional to 223,618.84, 308,593.77 and 121,644.06

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Solution

The fourth proportional to 223,618.84, 308,593.77 and 121,644.06 is: 167,868.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,618.84 : 308,593.77 = 121,644.06 : x
  2. Step 2: Convert to fraction form
    223,618.84/308,593.77 = 121,644.06/x
  3. Step 3: Cross multiply
    223,618.84x = 308,593.77 × 121,644.06
  4. Step 4: Simplify right side
    223,618.84x = 37,538,597,460.11
  5. Step 5: Solve for x
    x = 37,538,597,460.11/223,618.84
  6. Step 6: Final answer
    x = 167,868.67

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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.