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Finding the Fourth Proportional to 398,545.03, 597,815.31 and 99,025.48

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Solution

The fourth proportional to 398,545.03, 597,815.31 and 99,025.48 is: 148,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,545.03 : 597,815.31 = 99,025.48 : x
  2. Step 2: Convert to fraction form
    398,545.03/597,815.31 = 99,025.48/x
  3. Step 3: Cross multiply
    398,545.03x = 597,815.31 × 99,025.48
  4. Step 4: Simplify right side
    398,545.03x = 59,198,949,142.71
  5. Step 5: Solve for x
    x = 59,198,949,142.71/398,545.03
  6. Step 6: Final answer
    x = 148,537.67

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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.