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Finding the Fourth Proportional to 1,070,834.45, 1,605,734.97 and 621,668.39

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Solution

The fourth proportional to 1,070,834.45, 1,605,734.97 and 621,668.39 is: 932,202.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,834.45 : 1,605,734.97 = 621,668.39 : x
  2. Step 2: Convert to fraction form
    1,070,834.45/1,605,734.97 = 621,668.39/x
  3. Step 3: Cross multiply
    1,070,834.45x = 1,605,734.97 × 621,668.39
  4. Step 4: Simplify right side
    1,070,834.45x = 998,234,666,703.55
  5. Step 5: Solve for x
    x = 998,234,666,703.55/1,070,834.45
  6. Step 6: Final answer
    x = 932,202.61

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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.