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Finding the Fourth Proportional to 137,063.55, 205,641.99 and 73,889.77

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Solution

The fourth proportional to 137,063.55, 205,641.99 and 73,889.77 is: 110,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,063.55 : 205,641.99 = 73,889.77 : x
  2. Step 2: Convert to fraction form
    137,063.55/205,641.99 = 73,889.77/x
  3. Step 3: Cross multiply
    137,063.55x = 205,641.99 × 73,889.77
  4. Step 4: Simplify right side
    137,063.55x = 15,194,840,105.01
  5. Step 5: Solve for x
    x = 15,194,840,105.01/137,063.55
  6. Step 6: Final answer
    x = 110,859.82

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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.