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Finding the Fourth Proportional to 172,688.70, 238,310.19 and 97,237.74

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Solution

The fourth proportional to 172,688.70, 238,310.19 and 97,237.74 is: 134,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,688.70 : 238,310.19 = 97,237.74 : x
  2. Step 2: Convert to fraction form
    172,688.70/238,310.19 = 97,237.74/x
  3. Step 3: Cross multiply
    172,688.70x = 238,310.19 × 97,237.74
  4. Step 4: Simplify right side
    172,688.70x = 23,172,744,294.57
  5. Step 5: Solve for x
    x = 23,172,744,294.57/172,688.70
  6. Step 6: Final answer
    x = 134,187.96

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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.