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Finding the Fourth Proportional to 160,981.60, 241,702.80 and 90,997.60

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Solution

The fourth proportional to 160,981.60, 241,702.80 and 90,997.60 is: 136,626.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,981.60 : 241,702.80 = 90,997.60 : x
  2. Step 2: Convert to fraction form
    160,981.60/241,702.80 = 90,997.60/x
  3. Step 3: Cross multiply
    160,981.60x = 241,702.80 × 90,997.60
  4. Step 4: Simplify right side
    160,981.60x = 21,994,374,713.28
  5. Step 5: Solve for x
    x = 21,994,374,713.28/160,981.60
  6. Step 6: Final answer
    x = 136,626.64

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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.