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Finding the Fourth Proportional to 122,693.40, 184,041.86 and 80,841.48

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Solution

The fourth proportional to 122,693.40, 184,041.86 and 80,841.48 is: 121,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,693.40 : 184,041.86 = 80,841.48 : x
  2. Step 2: Convert to fraction form
    122,693.40/184,041.86 = 80,841.48/x
  3. Step 3: Cross multiply
    122,693.40x = 184,041.86 × 80,841.48
  4. Step 4: Simplify right side
    122,693.40x = 14,878,216,344.35
  5. Step 5: Solve for x
    x = 14,878,216,344.35/122,693.40
  6. Step 6: Final answer
    x = 121,263.38

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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.