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Finding the Fourth Proportional to 482,906.22, 724,373.03 and 127,920.30

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Solution

The fourth proportional to 482,906.22, 724,373.03 and 127,920.30 is: 191,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,906.22 : 724,373.03 = 127,920.30 : x
  2. Step 2: Convert to fraction form
    482,906.22/724,373.03 = 127,920.30/x
  3. Step 3: Cross multiply
    482,906.22x = 724,373.03 × 127,920.30
  4. Step 4: Simplify right side
    482,906.22x = 92,662,015,309.51
  5. Step 5: Solve for x
    x = 92,662,015,309.51/482,906.22
  6. Step 6: Final answer
    x = 191,884.08

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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.