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Finding the Fourth Proportional to 185,893.08, 278,611.20 and 85,918.02

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Solution

The fourth proportional to 185,893.08, 278,611.20 and 85,918.02 is: 128,771.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,893.08 : 278,611.20 = 85,918.02 : x
  2. Step 2: Convert to fraction form
    185,893.08/278,611.20 = 85,918.02/x
  3. Step 3: Cross multiply
    185,893.08x = 278,611.20 × 85,918.02
  4. Step 4: Simplify right side
    185,893.08x = 23,937,722,653.82
  5. Step 5: Solve for x
    x = 23,937,722,653.82/185,893.08
  6. Step 6: Final answer
    x = 128,771.46

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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.