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Finding the Fourth Proportional to 122,950.10, 184,425.15 and 120,981.80

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Solution

The fourth proportional to 122,950.10, 184,425.15 and 120,981.80 is: 181,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,950.10 : 184,425.15 = 120,981.80 : x
  2. Step 2: Convert to fraction form
    122,950.10/184,425.15 = 120,981.80/x
  3. Step 3: Cross multiply
    122,950.10x = 184,425.15 × 120,981.80
  4. Step 4: Simplify right side
    122,950.10x = 22,312,086,612.27
  5. Step 5: Solve for x
    x = 22,312,086,612.27/122,950.10
  6. Step 6: Final answer
    x = 181,472.70

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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.