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Finding the Fourth Proportional to 125,841.40, 188,630.88 and 51,013.20

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Solution

The fourth proportional to 125,841.40, 188,630.88 and 51,013.20 is: 76,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,841.40 : 188,630.88 = 51,013.20 : x
  2. Step 2: Convert to fraction form
    125,841.40/188,630.88 = 51,013.20/x
  3. Step 3: Cross multiply
    125,841.40x = 188,630.88 × 51,013.20
  4. Step 4: Simplify right side
    125,841.40x = 9,622,664,807.62
  5. Step 5: Solve for x
    x = 9,622,664,807.62/125,841.40
  6. Step 6: Final answer
    x = 76,466.61

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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.