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Finding the Fourth Proportional to 133,820.50, 184,672.29 and 74,204.50

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Solution

The fourth proportional to 133,820.50, 184,672.29 and 74,204.50 is: 102,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,820.50 : 184,672.29 = 74,204.50 : x
  2. Step 2: Convert to fraction form
    133,820.50/184,672.29 = 74,204.50/x
  3. Step 3: Cross multiply
    133,820.50x = 184,672.29 × 74,204.50
  4. Step 4: Simplify right side
    133,820.50x = 13,703,514,943.31
  5. Step 5: Solve for x
    x = 13,703,514,943.31/133,820.50
  6. Step 6: Final answer
    x = 102,402.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.