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Finding the Fourth Proportional to 185,855.76, 278,750.74 and 84,630.60

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Solution

The fourth proportional to 185,855.76, 278,750.74 and 84,630.60 is: 126,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,855.76 : 278,750.74 = 84,630.60 : x
  2. Step 2: Convert to fraction form
    185,855.76/278,750.74 = 84,630.60/x
  3. Step 3: Cross multiply
    185,855.76x = 278,750.74 × 84,630.60
  4. Step 4: Simplify right side
    185,855.76x = 23,590,842,376.64
  5. Step 5: Solve for x
    x = 23,590,842,376.64/185,855.76
  6. Step 6: Final answer
    x = 126,930.92

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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.