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Finding the Fourth Proportional to 139,058.75, 208,519.11 and 44,276.59

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Solution

The fourth proportional to 139,058.75, 208,519.11 and 44,276.59 is: 66,392.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,058.75 : 208,519.11 = 44,276.59 : x
  2. Step 2: Convert to fraction form
    139,058.75/208,519.11 = 44,276.59/x
  3. Step 3: Cross multiply
    139,058.75x = 208,519.11 × 44,276.59
  4. Step 4: Simplify right side
    139,058.75x = 9,232,514,619.34
  5. Step 5: Solve for x
    x = 9,232,514,619.34/139,058.75
  6. Step 6: Final answer
    x = 66,392.91

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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.