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Finding the Fourth Proportional to 439,711.80, 616,996.20 and 439,711.80

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Solution

The fourth proportional to 439,711.80, 616,996.20 and 439,711.80 is: 616,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,711.80 : 616,996.20 = 439,711.80 : x
  2. Step 2: Convert to fraction form
    439,711.80/616,996.20 = 439,711.80/x
  3. Step 3: Cross multiply
    439,711.80x = 616,996.20 × 439,711.80
  4. Step 4: Simplify right side
    439,711.80x = 271,300,509,695.16
  5. Step 5: Solve for x
    x = 271,300,509,695.16/439,711.80
  6. Step 6: Final answer
    x = 616,996.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.