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Finding the Fourth Proportional to 235,833.88, 353,677.92 and 78,029.68

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Solution

The fourth proportional to 235,833.88, 353,677.92 and 78,029.68 is: 117,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,833.88 : 353,677.92 = 78,029.68 : x
  2. Step 2: Convert to fraction form
    235,833.88/353,677.92 = 78,029.68/x
  3. Step 3: Cross multiply
    235,833.88x = 353,677.92 × 78,029.68
  4. Step 4: Simplify right side
    235,833.88x = 27,597,374,920.67
  5. Step 5: Solve for x
    x = 27,597,374,920.67/235,833.88
  6. Step 6: Final answer
    x = 117,020.40

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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.