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Finding the Fourth Proportional to 328,037.80, 492,056.70 and 162,149.80

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Solution

The fourth proportional to 328,037.80, 492,056.70 and 162,149.80 is: 243,224.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,037.80 : 492,056.70 = 162,149.80 : x
  2. Step 2: Convert to fraction form
    328,037.80/492,056.70 = 162,149.80/x
  3. Step 3: Cross multiply
    328,037.80x = 492,056.70 × 162,149.80
  4. Step 4: Simplify right side
    328,037.80x = 79,786,895,493.66
  5. Step 5: Solve for x
    x = 79,786,895,493.66/328,037.80
  6. Step 6: Final answer
    x = 243,224.70

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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.