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Finding the Fourth Proportional to 580,077.51, 800,654.10 and 396,390.43

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Solution

The fourth proportional to 580,077.51, 800,654.10 and 396,390.43 is: 547,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,077.51 : 800,654.10 = 396,390.43 : x
  2. Step 2: Convert to fraction form
    580,077.51/800,654.10 = 396,390.43/x
  3. Step 3: Cross multiply
    580,077.51x = 800,654.10 × 396,390.43
  4. Step 4: Simplify right side
    580,077.51x = 317,371,617,990.94
  5. Step 5: Solve for x
    x = 317,371,617,990.94/580,077.51
  6. Step 6: Final answer
    x = 547,119.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.