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Finding the Fourth Proportional to 77,253.40, 115,861.95 and 43,534.11

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Solution

The fourth proportional to 77,253.40, 115,861.95 and 43,534.11 is: 65,290.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,253.40 : 115,861.95 = 43,534.11 : x
  2. Step 2: Convert to fraction form
    77,253.40/115,861.95 = 43,534.11/x
  3. Step 3: Cross multiply
    77,253.40x = 115,861.95 × 43,534.11
  4. Step 4: Simplify right side
    77,253.40x = 5,043,947,310.60
  5. Step 5: Solve for x
    x = 5,043,947,310.60/77,253.40
  6. Step 6: Final answer
    x = 65,290.94

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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.