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Finding the Fourth Proportional to 303,520.86, 455,330.70 and 113,995.98

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Solution

The fourth proportional to 303,520.86, 455,330.70 and 113,995.98 is: 171,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,520.86 : 455,330.70 = 113,995.98 : x
  2. Step 2: Convert to fraction form
    303,520.86/455,330.70 = 113,995.98/x
  3. Step 3: Cross multiply
    303,520.86x = 455,330.70 × 113,995.98
  4. Step 4: Simplify right side
    303,520.86x = 51,905,869,370.59
  5. Step 5: Solve for x
    x = 51,905,869,370.59/303,520.86
  6. Step 6: Final answer
    x = 171,012.53

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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.