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Finding the Fourth Proportional to 185,857.94, 278,744.88 and 85,963.32

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Solution

The fourth proportional to 185,857.94, 278,744.88 and 85,963.32 is: 128,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,857.94 : 278,744.88 = 85,963.32 : x
  2. Step 2: Convert to fraction form
    185,857.94/278,744.88 = 85,963.32/x
  3. Step 3: Cross multiply
    185,857.94x = 278,744.88 × 85,963.32
  4. Step 4: Simplify right side
    185,857.94x = 23,961,835,317.80
  5. Step 5: Solve for x
    x = 23,961,835,317.80/185,857.94
  6. Step 6: Final answer
    x = 128,925.54

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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.