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Finding the Fourth Proportional to 122,995.10, 184,492.65 and 81,004.70

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Solution

The fourth proportional to 122,995.10, 184,492.65 and 81,004.70 is: 121,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,995.10 : 184,492.65 = 81,004.70 : x
  2. Step 2: Convert to fraction form
    122,995.10/184,492.65 = 81,004.70/x
  3. Step 3: Cross multiply
    122,995.10x = 184,492.65 × 81,004.70
  4. Step 4: Simplify right side
    122,995.10x = 14,944,771,765.46
  5. Step 5: Solve for x
    x = 14,944,771,765.46/122,995.10
  6. Step 6: Final answer
    x = 121,507.05

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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.