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Finding the Fourth Proportional to 88,213.50, 121,734.63 and 48,469.50

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Solution

The fourth proportional to 88,213.50, 121,734.63 and 48,469.50 is: 66,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,213.50 : 121,734.63 = 48,469.50 : x
  2. Step 2: Convert to fraction form
    88,213.50/121,734.63 = 48,469.50/x
  3. Step 3: Cross multiply
    88,213.50x = 121,734.63 × 48,469.50
  4. Step 4: Simplify right side
    88,213.50x = 5,900,416,648.79
  5. Step 5: Solve for x
    x = 5,900,416,648.79/88,213.50
  6. Step 6: Final answer
    x = 66,887.91

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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.