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Finding the Fourth Proportional to 398,711.58, 597,095.82 and 263,693.40

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Solution

The fourth proportional to 398,711.58, 597,095.82 and 263,693.40 is: 394,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,711.58 : 597,095.82 = 263,693.40 : x
  2. Step 2: Convert to fraction form
    398,711.58/597,095.82 = 263,693.40/x
  3. Step 3: Cross multiply
    398,711.58x = 597,095.82 × 263,693.40
  4. Step 4: Simplify right side
    398,711.58x = 157,450,226,901.59
  5. Step 5: Solve for x
    x = 157,450,226,901.59/398,711.58
  6. Step 6: Final answer
    x = 394,897.55

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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.