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Finding the Fourth Proportional to 353,059.11, 487,221.90 and 191,914.16

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Solution

The fourth proportional to 353,059.11, 487,221.90 and 191,914.16 is: 264,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,059.11 : 487,221.90 = 191,914.16 : x
  2. Step 2: Convert to fraction form
    353,059.11/487,221.90 = 191,914.16/x
  3. Step 3: Cross multiply
    353,059.11x = 487,221.90 × 191,914.16
  4. Step 4: Simplify right side
    353,059.11x = 93,504,779,235.99
  5. Step 5: Solve for x
    x = 93,504,779,235.99/353,059.11
  6. Step 6: Final answer
    x = 264,841.71

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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.