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Finding the Fourth Proportional to 372,459.30, 514,005.50 and 211,321.14

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Solution

The fourth proportional to 372,459.30, 514,005.50 and 211,321.14 is: 291,629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,459.30 : 514,005.50 = 211,321.14 : x
  2. Step 2: Convert to fraction form
    372,459.30/514,005.50 = 211,321.14/x
  3. Step 3: Cross multiply
    372,459.30x = 514,005.50 × 211,321.14
  4. Step 4: Simplify right side
    372,459.30x = 108,620,228,226.27
  5. Step 5: Solve for x
    x = 108,620,228,226.27/372,459.30
  6. Step 6: Final answer
    x = 291,629.79

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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.