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Finding the Fourth Proportional to 122,366.54, 183,542.37 and 72,762.29

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Solution

The fourth proportional to 122,366.54, 183,542.37 and 72,762.29 is: 109,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,366.54 : 183,542.37 = 72,762.29 : x
  2. Step 2: Convert to fraction form
    122,366.54/183,542.37 = 72,762.29/x
  3. Step 3: Cross multiply
    122,366.54x = 183,542.37 × 72,762.29
  4. Step 4: Simplify right side
    122,366.54x = 13,354,962,235.52
  5. Step 5: Solve for x
    x = 13,354,962,235.52/122,366.54
  6. Step 6: Final answer
    x = 109,139.01

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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.