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Finding the Fourth Proportional to 123,003.80, 184,451.70 and 56,421.80

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Solution

The fourth proportional to 123,003.80, 184,451.70 and 56,421.80 is: 84,607.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,003.80 : 184,451.70 = 56,421.80 : x
  2. Step 2: Convert to fraction form
    123,003.80/184,451.70 = 56,421.80/x
  3. Step 3: Cross multiply
    123,003.80x = 184,451.70 × 56,421.80
  4. Step 4: Simplify right side
    123,003.80x = 10,407,096,927.06
  5. Step 5: Solve for x
    x = 10,407,096,927.06/123,003.80
  6. Step 6: Final answer
    x = 84,607.93

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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.