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Finding the Fourth Proportional to 121,994.32, 183,054.12 and 92,402.32

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Solution

The fourth proportional to 121,994.32, 183,054.12 and 92,402.32 is: 138,650.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,994.32 : 183,054.12 = 92,402.32 : x
  2. Step 2: Convert to fraction form
    121,994.32/183,054.12 = 92,402.32/x
  3. Step 3: Cross multiply
    121,994.32x = 183,054.12 × 92,402.32
  4. Step 4: Simplify right side
    121,994.32x = 16,914,625,373.56
  5. Step 5: Solve for x
    x = 16,914,625,373.56/121,994.32
  6. Step 6: Final answer
    x = 138,650.93

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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.