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Finding the Fourth Proportional to 354,222.34, 531,236.34 and 211,955.69

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Solution

The fourth proportional to 354,222.34, 531,236.34 and 211,955.69 is: 317,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,222.34 : 531,236.34 = 211,955.69 : x
  2. Step 2: Convert to fraction form
    354,222.34/531,236.34 = 211,955.69/x
  3. Step 3: Cross multiply
    354,222.34x = 531,236.34 × 211,955.69
  4. Step 4: Simplify right side
    354,222.34x = 112,598,566,325.87
  5. Step 5: Solve for x
    x = 112,598,566,325.87/354,222.34
  6. Step 6: Final answer
    x = 317,875.40

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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.