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Finding the Fourth Proportional to 238,915.44, 358,431.48 and 72,703.44

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Solution

The fourth proportional to 238,915.44, 358,431.48 and 72,703.44 is: 109,072.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,915.44 : 358,431.48 = 72,703.44 : x
  2. Step 2: Convert to fraction form
    238,915.44/358,431.48 = 72,703.44/x
  3. Step 3: Cross multiply
    238,915.44x = 358,431.48 × 72,703.44
  4. Step 4: Simplify right side
    238,915.44x = 26,059,201,600.29
  5. Step 5: Solve for x
    x = 26,059,201,600.29/238,915.44
  6. Step 6: Final answer
    x = 109,072.91

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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.