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Finding the Fourth Proportional to 811,794.70, 1,217,692.05 and 575,404.30

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Solution

The fourth proportional to 811,794.70, 1,217,692.05 and 575,404.30 is: 863,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,794.70 : 1,217,692.05 = 575,404.30 : x
  2. Step 2: Convert to fraction form
    811,794.70/1,217,692.05 = 575,404.30/x
  3. Step 3: Cross multiply
    811,794.70x = 1,217,692.05 × 575,404.30
  4. Step 4: Simplify right side
    811,794.70x = 700,665,241,645.82
  5. Step 5: Solve for x
    x = 700,665,241,645.82/811,794.70
  6. Step 6: Final answer
    x = 863,106.45

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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.