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Finding the Fourth Proportional to 243,421.80, 365,046.30 and 168,541.80

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Solution

The fourth proportional to 243,421.80, 365,046.30 and 168,541.80 is: 252,752.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,421.80 : 365,046.30 = 168,541.80 : x
  2. Step 2: Convert to fraction form
    243,421.80/365,046.30 = 168,541.80/x
  3. Step 3: Cross multiply
    243,421.80x = 365,046.30 × 168,541.80
  4. Step 4: Simplify right side
    243,421.80x = 61,525,560,485.34
  5. Step 5: Solve for x
    x = 61,525,560,485.34/243,421.80
  6. Step 6: Final answer
    x = 252,752.88

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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.