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Finding the Fourth Proportional to 615,512, 923,387.70 and 236,405

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Solution

The fourth proportional to 615,512, 923,387.70 and 236,405 is: 354,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,512 : 923,387.70 = 236,405 : x
  2. Step 2: Convert to fraction form
    615,512/923,387.70 = 236,405/x
  3. Step 3: Cross multiply
    615,512x = 923,387.70 × 236,405
  4. Step 4: Simplify right side
    615,512x = 218,293,469,218.50
  5. Step 5: Solve for x
    x = 218,293,469,218.50/615,512
  6. Step 6: Final answer
    x = 354,653.47

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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.