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Finding the Fourth Proportional to 339,861.34, 468,998.70 and 186,899.36

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Solution

The fourth proportional to 339,861.34, 468,998.70 and 186,899.36 is: 257,915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,861.34 : 468,998.70 = 186,899.36 : x
  2. Step 2: Convert to fraction form
    339,861.34/468,998.70 = 186,899.36/x
  3. Step 3: Cross multiply
    339,861.34x = 468,998.70 × 186,899.36
  4. Step 4: Simplify right side
    339,861.34x = 87,655,556,870.83
  5. Step 5: Solve for x
    x = 87,655,556,870.83/339,861.34
  6. Step 6: Final answer
    x = 257,915.65

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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.