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Finding the Fourth Proportional to 110,419.20, 152,409.60 and 99,532.80

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Solution

The fourth proportional to 110,419.20, 152,409.60 and 99,532.80 is: 137,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,419.20 : 152,409.60 = 99,532.80 : x
  2. Step 2: Convert to fraction form
    110,419.20/152,409.60 = 99,532.80/x
  3. Step 3: Cross multiply
    110,419.20x = 152,409.60 × 99,532.80
  4. Step 4: Simplify right side
    110,419.20x = 15,169,754,234.88
  5. Step 5: Solve for x
    x = 15,169,754,234.88/110,419.20
  6. Step 6: Final answer
    x = 137,383.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.