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Finding the Fourth Proportional to 111,729.60, 156,628.80 and 111,729.60

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Solution

The fourth proportional to 111,729.60, 156,628.80 and 111,729.60 is: 156,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,729.60 : 156,628.80 = 111,729.60 : x
  2. Step 2: Convert to fraction form
    111,729.60/156,628.80 = 111,729.60/x
  3. Step 3: Cross multiply
    111,729.60x = 156,628.80 × 111,729.60
  4. Step 4: Simplify right side
    111,729.60x = 17,500,073,172.48
  5. Step 5: Solve for x
    x = 17,500,073,172.48/111,729.60
  6. Step 6: Final answer
    x = 156,628.80

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.