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Finding the Fourth Proportional to 866,491.80, 1,297,404.90 and 866,491.80

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Solution

The fourth proportional to 866,491.80, 1,297,404.90 and 866,491.80 is: 1,297,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,491.80 : 1,297,404.90 = 866,491.80 : x
  2. Step 2: Convert to fraction form
    866,491.80/1,297,404.90 = 866,491.80/x
  3. Step 3: Cross multiply
    866,491.80x = 1,297,404.90 × 866,491.80
  4. Step 4: Simplify right side
    866,491.80x = 1,124,190,707,129.82
  5. Step 5: Solve for x
    x = 1,124,190,707,129.82/866,491.80
  6. Step 6: Final answer
    x = 1,297,404.90

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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.