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Finding the Fourth Proportional to 214,902.70, 322,240.65 and 72,699.10

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Solution

The fourth proportional to 214,902.70, 322,240.65 and 72,699.10 is: 109,010.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,902.70 : 322,240.65 = 72,699.10 : x
  2. Step 2: Convert to fraction form
    214,902.70/322,240.65 = 72,699.10/x
  3. Step 3: Cross multiply
    214,902.70x = 322,240.65 × 72,699.10
  4. Step 4: Simplify right side
    214,902.70x = 23,426,605,238.42
  5. Step 5: Solve for x
    x = 23,426,605,238.42/214,902.70
  6. Step 6: Final answer
    x = 109,010.29

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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.