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Finding the Fourth Proportional to 131,729.90, 197,157.45 and 131,729.90

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Solution

The fourth proportional to 131,729.90, 197,157.45 and 131,729.90 is: 197,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,729.90 : 197,157.45 = 131,729.90 : x
  2. Step 2: Convert to fraction form
    131,729.90/197,157.45 = 131,729.90/x
  3. Step 3: Cross multiply
    131,729.90x = 197,157.45 × 131,729.90
  4. Step 4: Simplify right side
    131,729.90x = 25,971,531,172.76
  5. Step 5: Solve for x
    x = 25,971,531,172.76/131,729.90
  6. Step 6: Final answer
    x = 197,157.45

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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.