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Finding the Fourth Proportional to 866,068.20, 1,298,411.10 and 367,021.80

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Solution

The fourth proportional to 866,068.20, 1,298,411.10 and 367,021.80 is: 550,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,068.20 : 1,298,411.10 = 367,021.80 : x
  2. Step 2: Convert to fraction form
    866,068.20/1,298,411.10 = 367,021.80/x
  3. Step 3: Cross multiply
    866,068.20x = 1,298,411.10 × 367,021.80
  4. Step 4: Simplify right side
    866,068.20x = 476,545,179,061.98
  5. Step 5: Solve for x
    x = 476,545,179,061.98/866,068.20
  6. Step 6: Final answer
    x = 550,239.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.