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Finding the Fourth Proportional to 219,061.88, 328,592.88 and 92,669.36

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Solution

The fourth proportional to 219,061.88, 328,592.88 and 92,669.36 is: 139,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,061.88 : 328,592.88 = 92,669.36 : x
  2. Step 2: Convert to fraction form
    219,061.88/328,592.88 = 92,669.36/x
  3. Step 3: Cross multiply
    219,061.88x = 328,592.88 × 92,669.36
  4. Step 4: Simplify right side
    219,061.88x = 30,450,491,890.16
  5. Step 5: Solve for x
    x = 30,450,491,890.16/219,061.88
  6. Step 6: Final answer
    x = 139,004.07

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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.