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Finding the Fourth Proportional to 122,491.40, 183,737.10 and 43,694.60

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Solution

The fourth proportional to 122,491.40, 183,737.10 and 43,694.60 is: 65,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,491.40 : 183,737.10 = 43,694.60 : x
  2. Step 2: Convert to fraction form
    122,491.40/183,737.10 = 43,694.60/x
  3. Step 3: Cross multiply
    122,491.40x = 183,737.10 × 43,694.60
  4. Step 4: Simplify right side
    122,491.40x = 8,028,319,089.66
  5. Step 5: Solve for x
    x = 8,028,319,089.66/122,491.40
  6. Step 6: Final answer
    x = 65,541.90

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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.