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Finding the Fourth Proportional to 125,979,680.70, 188,969,521.05 and 125,979,680.70

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Solution

The fourth proportional to 125,979,680.70, 188,969,521.05 and 125,979,680.70 is: 188,969,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,979,680.70 : 188,969,521.05 = 125,979,680.70 : x
  2. Step 2: Convert to fraction form
    125,979,680.70/188,969,521.05 = 125,979,680.70/x
  3. Step 3: Cross multiply
    125,979,680.70x = 188,969,521.05 × 125,979,680.70
  4. Step 4: Simplify right side
    125,979,680.70x = 23,806,319,923,910,932
  5. Step 5: Solve for x
    x = 23,806,319,923,910,932/125,979,680.70
  6. Step 6: Final answer
    x = 188,969,521.05

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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.