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Finding the Fourth Proportional to 235,389, 353,242.26 and 87,645

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Solution

The fourth proportional to 235,389, 353,242.26 and 87,645 is: 131,526.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,389 : 353,242.26 = 87,645 : x
  2. Step 2: Convert to fraction form
    235,389/353,242.26 = 87,645/x
  3. Step 3: Cross multiply
    235,389x = 353,242.26 × 87,645
  4. Step 4: Simplify right side
    235,389x = 30,959,917,877.70
  5. Step 5: Solve for x
    x = 30,959,917,877.70/235,389
  6. Step 6: Final answer
    x = 131,526.61

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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.