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Finding the Fourth Proportional to 115,208.87, 172,796.90 and 36,312.84

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Solution

The fourth proportional to 115,208.87, 172,796.90 and 36,312.84 is: 54,464.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,208.87 : 172,796.90 = 36,312.84 : x
  2. Step 2: Convert to fraction form
    115,208.87/172,796.90 = 36,312.84/x
  3. Step 3: Cross multiply
    115,208.87x = 172,796.90 × 36,312.84
  4. Step 4: Simplify right side
    115,208.87x = 6,274,746,000.63
  5. Step 5: Solve for x
    x = 6,274,746,000.63/115,208.87
  6. Step 6: Final answer
    x = 54,464.09

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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.