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Finding the Fourth Proportional to 323,011.78, 445,756.30 and 187,052.88

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Solution

The fourth proportional to 323,011.78, 445,756.30 and 187,052.88 is: 258,133.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,011.78 : 445,756.30 = 187,052.88 : x
  2. Step 2: Convert to fraction form
    323,011.78/445,756.30 = 187,052.88/x
  3. Step 3: Cross multiply
    323,011.78x = 445,756.30 × 187,052.88
  4. Step 4: Simplify right side
    323,011.78x = 83,379,999,693.14
  5. Step 5: Solve for x
    x = 83,379,999,693.14/323,011.78
  6. Step 6: Final answer
    x = 258,133.00

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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.