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Finding the Fourth Proportional to 66,748.50, 92,113.20 and 36,940.50

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Solution

The fourth proportional to 66,748.50, 92,113.20 and 36,940.50 is: 50,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,748.50 : 92,113.20 = 36,940.50 : x
  2. Step 2: Convert to fraction form
    66,748.50/92,113.20 = 36,940.50/x
  3. Step 3: Cross multiply
    66,748.50x = 92,113.20 × 36,940.50
  4. Step 4: Simplify right side
    66,748.50x = 3,402,707,664.60
  5. Step 5: Solve for x
    x = 3,402,707,664.60/66,748.50
  6. Step 6: Final answer
    x = 50,978.04

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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.