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Finding the Fourth Proportional to 255,645.54, 353,428.58 and 191,872.62

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Solution

The fourth proportional to 255,645.54, 353,428.58 and 191,872.62 is: 265,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,645.54 : 353,428.58 = 191,872.62 : x
  2. Step 2: Convert to fraction form
    255,645.54/353,428.58 = 191,872.62/x
  3. Step 3: Cross multiply
    255,645.54x = 353,428.58 × 191,872.62
  4. Step 4: Simplify right side
    255,645.54x = 67,813,267,627.48
  5. Step 5: Solve for x
    x = 67,813,267,627.48/255,645.54
  6. Step 6: Final answer
    x = 265,262.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.