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Finding the Fourth Proportional to 353,167.20, 530,042.40 and 163,918.80

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Solution

The fourth proportional to 353,167.20, 530,042.40 and 163,918.80 is: 246,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,167.20 : 530,042.40 = 163,918.80 : x
  2. Step 2: Convert to fraction form
    353,167.20/530,042.40 = 163,918.80/x
  3. Step 3: Cross multiply
    353,167.20x = 530,042.40 × 163,918.80
  4. Step 4: Simplify right side
    353,167.20x = 86,883,914,157.12
  5. Step 5: Solve for x
    x = 86,883,914,157.12/353,167.20
  6. Step 6: Final answer
    x = 246,013.54

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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.