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Finding the Fourth Proportional to 161,906.40, 242,859.60 and 56,711.70

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Solution

The fourth proportional to 161,906.40, 242,859.60 and 56,711.70 is: 85,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,906.40 : 242,859.60 = 56,711.70 : x
  2. Step 2: Convert to fraction form
    161,906.40/242,859.60 = 56,711.70/x
  3. Step 3: Cross multiply
    161,906.40x = 242,859.60 × 56,711.70
  4. Step 4: Simplify right side
    161,906.40x = 13,772,980,777.32
  5. Step 5: Solve for x
    x = 13,772,980,777.32/161,906.40
  6. Step 6: Final answer
    x = 85,067.55

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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.