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Finding the Fourth Proportional to 618,898.24, 928,360.32 and 198,172.90

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Solution

The fourth proportional to 618,898.24, 928,360.32 and 198,172.90 is: 297,263.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,898.24 : 928,360.32 = 198,172.90 : x
  2. Step 2: Convert to fraction form
    618,898.24/928,360.32 = 198,172.90/x
  3. Step 3: Cross multiply
    618,898.24x = 928,360.32 × 198,172.90
  4. Step 4: Simplify right side
    618,898.24x = 183,975,856,859.33
  5. Step 5: Solve for x
    x = 183,975,856,859.33/618,898.24
  6. Step 6: Final answer
    x = 297,263.50

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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.