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Finding the Fourth Proportional to 917,082.80, 1,375,624.20 and 854,874.80

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Solution

The fourth proportional to 917,082.80, 1,375,624.20 and 854,874.80 is: 1,282,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,082.80 : 1,375,624.20 = 854,874.80 : x
  2. Step 2: Convert to fraction form
    917,082.80/1,375,624.20 = 854,874.80/x
  3. Step 3: Cross multiply
    917,082.80x = 1,375,624.20 × 854,874.80
  4. Step 4: Simplify right side
    917,082.80x = 1,175,986,462,850.16
  5. Step 5: Solve for x
    x = 1,175,986,462,850.16/917,082.80
  6. Step 6: Final answer
    x = 1,282,312.20

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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.