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Finding the Fourth Proportional to 216,545.80, 324,818.70 and 164,057.80

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Solution

The fourth proportional to 216,545.80, 324,818.70 and 164,057.80 is: 246,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,545.80 : 324,818.70 = 164,057.80 : x
  2. Step 2: Convert to fraction form
    216,545.80/324,818.70 = 164,057.80/x
  3. Step 3: Cross multiply
    216,545.80x = 324,818.70 × 164,057.80
  4. Step 4: Simplify right side
    216,545.80x = 53,289,041,320.86
  5. Step 5: Solve for x
    x = 53,289,041,320.86/216,545.80
  6. Step 6: Final answer
    x = 246,086.70

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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.