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Finding the Fourth Proportional to 160,905.60, 241,387.20 and 67,420.80

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Solution

The fourth proportional to 160,905.60, 241,387.20 and 67,420.80 is: 101,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,905.60 : 241,387.20 = 67,420.80 : x
  2. Step 2: Convert to fraction form
    160,905.60/241,387.20 = 67,420.80/x
  3. Step 3: Cross multiply
    160,905.60x = 241,387.20 × 67,420.80
  4. Step 4: Simplify right side
    160,905.60x = 16,274,518,133.76
  5. Step 5: Solve for x
    x = 16,274,518,133.76/160,905.60
  6. Step 6: Final answer
    x = 101,143.27

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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.