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Finding the Fourth Proportional to 238,554.20, 329,235.90 and 153,917.48

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Solution

The fourth proportional to 238,554.20, 329,235.90 and 153,917.48 is: 212,426.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,554.20 : 329,235.90 = 153,917.48 : x
  2. Step 2: Convert to fraction form
    238,554.20/329,235.90 = 153,917.48/x
  3. Step 3: Cross multiply
    238,554.20x = 329,235.90 × 153,917.48
  4. Step 4: Simplify right side
    238,554.20x = 50,675,160,053.53
  5. Step 5: Solve for x
    x = 50,675,160,053.53/238,554.20
  6. Step 6: Final answer
    x = 212,426.19

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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.