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Finding the Fourth Proportional to 561,517.49, 841,881.78 and 196,689.90

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Solution

The fourth proportional to 561,517.49, 841,881.78 and 196,689.90 is: 294,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,517.49 : 841,881.78 = 196,689.90 : x
  2. Step 2: Convert to fraction form
    561,517.49/841,881.78 = 196,689.90/x
  3. Step 3: Cross multiply
    561,517.49x = 841,881.78 × 196,689.90
  4. Step 4: Simplify right side
    561,517.49x = 165,589,638,620.51
  5. Step 5: Solve for x
    x = 165,589,638,620.51/561,517.49
  6. Step 6: Final answer
    x = 294,896.67

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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.