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Finding the Fourth Proportional to 339,918.22, 469,100.53 and 186,970.65

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Solution

The fourth proportional to 339,918.22, 469,100.53 and 186,970.65 is: 258,026.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,918.22 : 469,100.53 = 186,970.65 : x
  2. Step 2: Convert to fraction form
    339,918.22/469,100.53 = 186,970.65/x
  3. Step 3: Cross multiply
    339,918.22x = 469,100.53 × 186,970.65
  4. Step 4: Simplify right side
    339,918.22x = 87,708,029,393.42
  5. Step 5: Solve for x
    x = 87,708,029,393.42/339,918.22
  6. Step 6: Final answer
    x = 258,026.85

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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.