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Finding the Fourth Proportional to 125,852.94, 188,785.92 and 45,889.05

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Solution

The fourth proportional to 125,852.94, 188,785.92 and 45,889.05 is: 68,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,852.94 : 188,785.92 = 45,889.05 : x
  2. Step 2: Convert to fraction form
    125,852.94/188,785.92 = 45,889.05/x
  3. Step 3: Cross multiply
    125,852.94x = 188,785.92 × 45,889.05
  4. Step 4: Simplify right side
    125,852.94x = 8,663,206,522.18
  5. Step 5: Solve for x
    x = 8,663,206,522.18/125,852.94
  6. Step 6: Final answer
    x = 68,835.95

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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.