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Finding the Fourth Proportional to 158,931.03, 238,391.15 and 74,644.05

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Solution

The fourth proportional to 158,931.03, 238,391.15 and 74,644.05 is: 111,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,931.03 : 238,391.15 = 74,644.05 : x
  2. Step 2: Convert to fraction form
    158,931.03/238,391.15 = 74,644.05/x
  3. Step 3: Cross multiply
    158,931.03x = 238,391.15 × 74,644.05
  4. Step 4: Simplify right side
    158,931.03x = 17,794,480,546.94
  5. Step 5: Solve for x
    x = 17,794,480,546.94/158,931.03
  6. Step 6: Final answer
    x = 111,963.54

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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.