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Finding the Fourth Proportional to 331,895.80, 458,043.42 and 188,700.76

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Solution

The fourth proportional to 331,895.80, 458,043.42 and 188,700.76 is: 260,422.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,895.80 : 458,043.42 = 188,700.76 : x
  2. Step 2: Convert to fraction form
    331,895.80/458,043.42 = 188,700.76/x
  3. Step 3: Cross multiply
    331,895.80x = 458,043.42 × 188,700.76
  4. Step 4: Simplify right side
    331,895.80x = 86,433,141,467.00
  5. Step 5: Solve for x
    x = 86,433,141,467.00/331,895.80
  6. Step 6: Final answer
    x = 260,422.52

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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.