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Finding the Fourth Proportional to 110,428.80, 165,643.20 and 96,604.80

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Solution

The fourth proportional to 110,428.80, 165,643.20 and 96,604.80 is: 144,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,428.80 : 165,643.20 = 96,604.80 : x
  2. Step 2: Convert to fraction form
    110,428.80/165,643.20 = 96,604.80/x
  3. Step 3: Cross multiply
    110,428.80x = 165,643.20 × 96,604.80
  4. Step 4: Simplify right side
    110,428.80x = 16,001,928,207.36
  5. Step 5: Solve for x
    x = 16,001,928,207.36/110,428.80
  6. Step 6: Final answer
    x = 144,907.20

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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.