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Finding the Fourth Proportional to 123,045.40, 184,568.10 and 53,003.80

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Solution

The fourth proportional to 123,045.40, 184,568.10 and 53,003.80 is: 79,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,045.40 : 184,568.10 = 53,003.80 : x
  2. Step 2: Convert to fraction form
    123,045.40/184,568.10 = 53,003.80/x
  3. Step 3: Cross multiply
    123,045.40x = 184,568.10 × 53,003.80
  4. Step 4: Simplify right side
    123,045.40x = 9,782,810,658.78
  5. Step 5: Solve for x
    x = 9,782,810,658.78/123,045.40
  6. Step 6: Final answer
    x = 79,505.70

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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.