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Finding the Fourth Proportional to 615,542.20, 923,313.30 and 482,831.80

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Solution

The fourth proportional to 615,542.20, 923,313.30 and 482,831.80 is: 724,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,542.20 : 923,313.30 = 482,831.80 : x
  2. Step 2: Convert to fraction form
    615,542.20/923,313.30 = 482,831.80/x
  3. Step 3: Cross multiply
    615,542.20x = 923,313.30 × 482,831.80
  4. Step 4: Simplify right side
    615,542.20x = 445,805,022,602.94
  5. Step 5: Solve for x
    x = 445,805,022,602.94/615,542.20
  6. Step 6: Final answer
    x = 724,247.70

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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.