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Finding the Fourth Proportional to 238,559.62, 357,883.28 and 78,644.96

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Solution

The fourth proportional to 238,559.62, 357,883.28 and 78,644.96 is: 117,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,559.62 : 357,883.28 = 78,644.96 : x
  2. Step 2: Convert to fraction form
    238,559.62/357,883.28 = 78,644.96/x
  3. Step 3: Cross multiply
    238,559.62x = 357,883.28 × 78,644.96
  4. Step 4: Simplify right side
    238,559.62x = 28,145,716,240.27
  5. Step 5: Solve for x
    x = 28,145,716,240.27/238,559.62
  6. Step 6: Final answer
    x = 117,981.90

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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.