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Finding the Fourth Proportional to 339,783.18, 468,890.86 and 186,821.22

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Solution

The fourth proportional to 339,783.18, 468,890.86 and 186,821.22 is: 257,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,783.18 : 468,890.86 = 186,821.22 : x
  2. Step 2: Convert to fraction form
    339,783.18/468,890.86 = 186,821.22/x
  3. Step 3: Cross multiply
    339,783.18x = 468,890.86 × 186,821.22
  4. Step 4: Simplify right side
    339,783.18x = 87,598,762,512.05
  5. Step 5: Solve for x
    x = 87,598,762,512.05/339,783.18
  6. Step 6: Final answer
    x = 257,807.82

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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.