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Finding the Fourth Proportional to 92,951.50, 128,273.07 and 55,225.75

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Solution

The fourth proportional to 92,951.50, 128,273.07 and 55,225.75 is: 76,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,951.50 : 128,273.07 = 55,225.75 : x
  2. Step 2: Convert to fraction form
    92,951.50/128,273.07 = 55,225.75/x
  3. Step 3: Cross multiply
    92,951.50x = 128,273.07 × 55,225.75
  4. Step 4: Simplify right side
    92,951.50x = 7,083,976,495.55
  5. Step 5: Solve for x
    x = 7,083,976,495.55/92,951.50
  6. Step 6: Final answer
    x = 76,211.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.