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Finding the Fourth Proportional to 131,388.62, 197,075.63 and 116,764.88

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Solution

The fourth proportional to 131,388.62, 197,075.63 and 116,764.88 is: 175,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.62 : 197,075.63 = 116,764.88 : x
  2. Step 2: Convert to fraction form
    131,388.62/197,075.63 = 116,764.88/x
  3. Step 3: Cross multiply
    131,388.62x = 197,075.63 × 116,764.88
  4. Step 4: Simplify right side
    131,388.62x = 23,011,511,594.41
  5. Step 5: Solve for x
    x = 23,011,511,594.41/131,388.62
  6. Step 6: Final answer
    x = 175,140.83

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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.