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Finding the Fourth Proportional to 242,729.70, 363,985.20 and 92,920.20

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Solution

The fourth proportional to 242,729.70, 363,985.20 and 92,920.20 is: 139,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,729.70 : 363,985.20 = 92,920.20 : x
  2. Step 2: Convert to fraction form
    242,729.70/363,985.20 = 92,920.20/x
  3. Step 3: Cross multiply
    242,729.70x = 363,985.20 × 92,920.20
  4. Step 4: Simplify right side
    242,729.70x = 33,821,577,581.04
  5. Step 5: Solve for x
    x = 33,821,577,581.04/242,729.70
  6. Step 6: Final answer
    x = 139,338.44

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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.