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Finding the Fourth Proportional to 93,662.88, 129,255.80 and 51,220.50

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Solution

The fourth proportional to 93,662.88, 129,255.80 and 51,220.50 is: 70,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,662.88 : 129,255.80 = 51,220.50 : x
  2. Step 2: Convert to fraction form
    93,662.88/129,255.80 = 51,220.50/x
  3. Step 3: Cross multiply
    93,662.88x = 129,255.80 × 51,220.50
  4. Step 4: Simplify right side
    93,662.88x = 6,620,546,447.80
  5. Step 5: Solve for x
    x = 6,620,546,447.80/93,662.88
  6. Step 6: Final answer
    x = 70,684.85

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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.