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Finding the Fourth Proportional to 172,491.84, 238,037.76 and 97,040.96

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Solution

The fourth proportional to 172,491.84, 238,037.76 and 97,040.96 is: 133,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,491.84 : 238,037.76 = 97,040.96 : x
  2. Step 2: Convert to fraction form
    172,491.84/238,037.76 = 97,040.96/x
  3. Step 3: Cross multiply
    172,491.84x = 238,037.76 × 97,040.96
  4. Step 4: Simplify right side
    172,491.84x = 23,099,412,746.65
  5. Step 5: Solve for x
    x = 23,099,412,746.65/172,491.84
  6. Step 6: Final answer
    x = 133,915.97

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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.