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Finding the Fourth Proportional to 673,520.62, 930,231.70 and 490,574.31

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Solution

The fourth proportional to 673,520.62, 930,231.70 and 490,574.31 is: 677,555.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,520.62 : 930,231.70 = 490,574.31 : x
  2. Step 2: Convert to fraction form
    673,520.62/930,231.70 = 490,574.31/x
  3. Step 3: Cross multiply
    673,520.62x = 930,231.70 × 490,574.31
  4. Step 4: Simplify right side
    673,520.62x = 456,347,774,367.63
  5. Step 5: Solve for x
    x = 456,347,774,367.63/673,520.62
  6. Step 6: Final answer
    x = 677,555.76

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.