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Finding the Fourth Proportional to 125,566.21, 173,326.85 and 83,138.41

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Solution

The fourth proportional to 125,566.21, 173,326.85 and 83,138.41 is: 114,761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,566.21 : 173,326.85 = 83,138.41 : x
  2. Step 2: Convert to fraction form
    125,566.21/173,326.85 = 83,138.41/x
  3. Step 3: Cross multiply
    125,566.21x = 173,326.85 × 83,138.41
  4. Step 4: Simplify right side
    125,566.21x = 14,410,118,060.52
  5. Step 5: Solve for x
    x = 14,410,118,060.52/125,566.21
  6. Step 6: Final answer
    x = 114,761.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.