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Finding the Fourth Proportional to 188,813.58, 283,269.57 and 70,485.90

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Solution

The fourth proportional to 188,813.58, 283,269.57 and 70,485.90 is: 105,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,813.58 : 283,269.57 = 70,485.90 : x
  2. Step 2: Convert to fraction form
    188,813.58/283,269.57 = 70,485.90/x
  3. Step 3: Cross multiply
    188,813.58x = 283,269.57 × 70,485.90
  4. Step 4: Simplify right side
    188,813.58x = 19,966,510,584.06
  5. Step 5: Solve for x
    x = 19,966,510,584.06/188,813.58
  6. Step 6: Final answer
    x = 105,747.22

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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.