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Finding the Fourth Proportional to 234,340.50, 351,570.69 and 68,128.50

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Solution

The fourth proportional to 234,340.50, 351,570.69 and 68,128.50 is: 102,210.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,340.50 : 351,570.69 = 68,128.50 : x
  2. Step 2: Convert to fraction form
    234,340.50/351,570.69 = 68,128.50/x
  3. Step 3: Cross multiply
    234,340.50x = 351,570.69 × 68,128.50
  4. Step 4: Simplify right side
    234,340.50x = 23,951,983,753.67
  5. Step 5: Solve for x
    x = 23,951,983,753.67/234,340.50
  6. Step 6: Final answer
    x = 102,210.18

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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.