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Finding the Fourth Proportional to 516,491.56, 712,757.77 and 287,041.65

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Solution

The fourth proportional to 516,491.56, 712,757.77 and 287,041.65 is: 396,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,491.56 : 712,757.77 = 287,041.65 : x
  2. Step 2: Convert to fraction form
    516,491.56/712,757.77 = 287,041.65/x
  3. Step 3: Cross multiply
    516,491.56x = 712,757.77 × 287,041.65
  4. Step 4: Simplify right side
    516,491.56x = 204,591,166,351.12
  5. Step 5: Solve for x
    x = 204,591,166,351.12/516,491.56
  6. Step 6: Final answer
    x = 396,117.15

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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.