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Finding the Fourth Proportional to 711,053.00, 981,234.29 and 420,679.55

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Solution

The fourth proportional to 711,053.00, 981,234.29 and 420,679.55 is: 580,526.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,053.00 : 981,234.29 = 420,679.55 : x
  2. Step 2: Convert to fraction form
    711,053.00/981,234.29 = 420,679.55/x
  3. Step 3: Cross multiply
    711,053.00x = 981,234.29 × 420,679.55
  4. Step 4: Simplify right side
    711,053.00x = 412,785,192,552.20
  5. Step 5: Solve for x
    x = 412,785,192,552.20/711,053.00
  6. Step 6: Final answer
    x = 580,526.62

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Double scale
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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.