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Finding the Fourth Proportional to 188,763.65, 283,194.48 and 70,435.88

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Solution

The fourth proportional to 188,763.65, 283,194.48 and 70,435.88 is: 105,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,763.65 : 283,194.48 = 70,435.88 : x
  2. Step 2: Convert to fraction form
    188,763.65/283,194.48 = 70,435.88/x
  3. Step 3: Cross multiply
    188,763.65x = 283,194.48 × 70,435.88
  4. Step 4: Simplify right side
    188,763.65x = 19,947,050,993.97
  5. Step 5: Solve for x
    x = 19,947,050,993.97/188,763.65
  6. Step 6: Final answer
    x = 105,672.10

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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.