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Finding the Fourth Proportional to 355,842.40, 533,115.60 and 168,440.80

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Solution

The fourth proportional to 355,842.40, 533,115.60 and 168,440.80 is: 252,354.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,842.40 : 533,115.60 = 168,440.80 : x
  2. Step 2: Convert to fraction form
    355,842.40/533,115.60 = 168,440.80/x
  3. Step 3: Cross multiply
    355,842.40x = 533,115.60 × 168,440.80
  4. Step 4: Simplify right side
    355,842.40x = 89,798,418,156.48
  5. Step 5: Solve for x
    x = 89,798,418,156.48/355,842.40
  6. Step 6: Final answer
    x = 252,354.46

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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.