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Finding the Fourth Proportional to 664,502.80, 996,754.20 and 571,190.80

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Solution

The fourth proportional to 664,502.80, 996,754.20 and 571,190.80 is: 856,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,502.80 : 996,754.20 = 571,190.80 : x
  2. Step 2: Convert to fraction form
    664,502.80/996,754.20 = 571,190.80/x
  3. Step 3: Cross multiply
    664,502.80x = 996,754.20 × 571,190.80
  4. Step 4: Simplify right side
    664,502.80x = 569,336,828,901.36
  5. Step 5: Solve for x
    x = 569,336,828,901.36/664,502.80
  6. Step 6: Final answer
    x = 856,786.20

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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.