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Finding the Fourth Proportional to 561,293.91, 841,352.79 and 261,527.31

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Solution

The fourth proportional to 561,293.91, 841,352.79 and 261,527.31 is: 392,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,293.91 : 841,352.79 = 261,527.31 : x
  2. Step 2: Convert to fraction form
    561,293.91/841,352.79 = 261,527.31/x
  3. Step 3: Cross multiply
    561,293.91x = 841,352.79 × 261,527.31
  4. Step 4: Simplify right side
    561,293.91x = 220,036,731,929.70
  5. Step 5: Solve for x
    x = 220,036,731,929.70/561,293.91
  6. Step 6: Final answer
    x = 392,016.96

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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.