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Finding the Fourth Proportional to 172,904.76, 238,609.60 and 96,428.70

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Solution

The fourth proportional to 172,904.76, 238,609.60 and 96,428.70 is: 133,072.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,904.76 : 238,609.60 = 96,428.70 : x
  2. Step 2: Convert to fraction form
    172,904.76/238,609.60 = 96,428.70/x
  3. Step 3: Cross multiply
    172,904.76x = 238,609.60 × 96,428.70
  4. Step 4: Simplify right side
    172,904.76x = 23,008,813,294.45
  5. Step 5: Solve for x
    x = 23,008,813,294.45/172,904.76
  6. Step 6: Final answer
    x = 133,072.18

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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.