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Finding the Fourth Proportional to 242,676.20, 364,087.20 and 172,692.20

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Solution

The fourth proportional to 242,676.20, 364,087.20 and 172,692.20 is: 259,090.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,676.20 : 364,087.20 = 172,692.20 : x
  2. Step 2: Convert to fraction form
    242,676.20/364,087.20 = 172,692.20/x
  3. Step 3: Cross multiply
    242,676.20x = 364,087.20 × 172,692.20
  4. Step 4: Simplify right side
    242,676.20x = 62,875,019,559.84
  5. Step 5: Solve for x
    x = 62,875,019,559.84/242,676.20
  6. Step 6: Final answer
    x = 259,090.18

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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.