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Finding the Fourth Proportional to 664,313.80, 996,470.70 and 264,748.90

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Solution

The fourth proportional to 664,313.80, 996,470.70 and 264,748.90 is: 397,123.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,313.80 : 996,470.70 = 264,748.90 : x
  2. Step 2: Convert to fraction form
    664,313.80/996,470.70 = 264,748.90/x
  3. Step 3: Cross multiply
    664,313.80x = 996,470.70 × 264,748.90
  4. Step 4: Simplify right side
    664,313.80x = 263,814,521,707.23
  5. Step 5: Solve for x
    x = 263,814,521,707.23/664,313.80
  6. Step 6: Final answer
    x = 397,123.35

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Half scale
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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.