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Finding the Fourth Proportional to 408,554.33, 612,835.81 and 124,291.17

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Solution

The fourth proportional to 408,554.33, 612,835.81 and 124,291.17 is: 186,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,554.33 : 612,835.81 = 124,291.17 : x
  2. Step 2: Convert to fraction form
    408,554.33/612,835.81 = 124,291.17/x
  3. Step 3: Cross multiply
    408,554.33x = 612,835.81 × 124,291.17
  4. Step 4: Simplify right side
    408,554.33x = 76,170,079,532.07
  5. Step 5: Solve for x
    x = 76,170,079,532.07/408,554.33
  6. Step 6: Final answer
    x = 186,438.07

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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.