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Finding the Fourth Proportional to 251,757.86, 377,636.76 and 85,545.86

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Solution

The fourth proportional to 251,757.86, 377,636.76 and 85,545.86 is: 128,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,757.86 : 377,636.76 = 85,545.86 : x
  2. Step 2: Convert to fraction form
    251,757.86/377,636.76 = 85,545.86/x
  3. Step 3: Cross multiply
    251,757.86x = 377,636.76 × 85,545.86
  4. Step 4: Simplify right side
    251,757.86x = 32,305,259,513.63
  5. Step 5: Solve for x
    x = 32,305,259,513.63/251,757.86
  6. Step 6: Final answer
    x = 128,318.77

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1.5x scale

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.