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Finding the Fourth Proportional to 223,862.30, 308,919.93 and 121,885.19

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Solution

The fourth proportional to 223,862.30, 308,919.93 and 121,885.19 is: 168,196.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,862.30 : 308,919.93 = 121,885.19 : x
  2. Step 2: Convert to fraction form
    223,862.30/308,919.93 = 121,885.19/x
  3. Step 3: Cross multiply
    223,862.30x = 308,919.93 × 121,885.19
  4. Step 4: Simplify right side
    223,862.30x = 37,652,764,362.84
  5. Step 5: Solve for x
    x = 37,652,764,362.84/223,862.30
  6. Step 6: Final answer
    x = 168,196.09

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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.