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Finding the Fourth Proportional to 316,186.89, 436,333.15 and 188,837.88

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Solution

The fourth proportional to 316,186.89, 436,333.15 and 188,837.88 is: 260,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,186.89 : 436,333.15 = 188,837.88 : x
  2. Step 2: Convert to fraction form
    316,186.89/436,333.15 = 188,837.88/x
  3. Step 3: Cross multiply
    316,186.89x = 436,333.15 × 188,837.88
  4. Step 4: Simplify right side
    316,186.89x = 82,396,228,605.00
  5. Step 5: Solve for x
    x = 82,396,228,605.00/316,186.89
  6. Step 6: Final answer
    x = 260,593.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.