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Finding the Fourth Proportional to 122,999.90, 184,062.45 and 112,502.30

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Solution

The fourth proportional to 122,999.90, 184,062.45 and 112,502.30 is: 168,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,999.90 : 184,062.45 = 112,502.30 : x
  2. Step 2: Convert to fraction form
    122,999.90/184,062.45 = 112,502.30/x
  3. Step 3: Cross multiply
    122,999.90x = 184,062.45 × 112,502.30
  4. Step 4: Simplify right side
    122,999.90x = 20,707,448,968.64
  5. Step 5: Solve for x
    x = 20,707,448,968.64/122,999.90
  6. Step 6: Final answer
    x = 168,353.38

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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.