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Finding the Fourth Proportional to 125,996.98, 188,895.57 and 66,013.95

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Solution

The fourth proportional to 125,996.98, 188,895.57 and 66,013.95 is: 98,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,996.98 : 188,895.57 = 66,013.95 : x
  2. Step 2: Convert to fraction form
    125,996.98/188,895.57 = 66,013.95/x
  3. Step 3: Cross multiply
    125,996.98x = 188,895.57 × 66,013.95
  4. Step 4: Simplify right side
    125,996.98x = 12,469,742,713.20
  5. Step 5: Solve for x
    x = 12,469,742,713.20/125,996.98
  6. Step 6: Final answer
    x = 98,968.58

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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.