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Finding the Fourth Proportional to 493,568.55, 681,061.98 and 289,545.03

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Solution

The fourth proportional to 493,568.55, 681,061.98 and 289,545.03 is: 399,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,568.55 : 681,061.98 = 289,545.03 : x
  2. Step 2: Convert to fraction form
    493,568.55/681,061.98 = 289,545.03/x
  3. Step 3: Cross multiply
    493,568.55x = 681,061.98 × 289,545.03
  4. Step 4: Simplify right side
    493,568.55x = 197,198,112,516.75
  5. Step 5: Solve for x
    x = 197,198,112,516.75/493,568.55
  6. Step 6: Final answer
    x = 399,535.41

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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.