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Finding the Fourth Proportional to 516,409.20, 774,613.80 and 496,726.20

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Solution

The fourth proportional to 516,409.20, 774,613.80 and 496,726.20 is: 745,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,409.20 : 774,613.80 = 496,726.20 : x
  2. Step 2: Convert to fraction form
    516,409.20/774,613.80 = 496,726.20/x
  3. Step 3: Cross multiply
    516,409.20x = 774,613.80 × 496,726.20
  4. Step 4: Simplify right side
    516,409.20x = 384,770,969,341.56
  5. Step 5: Solve for x
    x = 384,770,969,341.56/516,409.20
  6. Step 6: Final answer
    x = 745,089.30

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Double scale
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Similar ratio
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1.5x scale

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.