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Finding the Fourth Proportional to 339,887.92, 469,045.61 and 186,928.54

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Solution

The fourth proportional to 339,887.92, 469,045.61 and 186,928.54 is: 257,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,887.92 : 469,045.61 = 186,928.54 : x
  2. Step 2: Convert to fraction form
    339,887.92/469,045.61 = 186,928.54/x
  3. Step 3: Cross multiply
    339,887.92x = 469,045.61 × 186,928.54
  4. Step 4: Simplify right side
    339,887.92x = 87,678,011,070.71
  5. Step 5: Solve for x
    x = 87,678,011,070.71/339,887.92
  6. Step 6: Final answer
    x = 257,961.54

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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.