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Finding the Fourth Proportional to 408,035.10, 612,052.65 and 282,063.90

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Solution

The fourth proportional to 408,035.10, 612,052.65 and 282,063.90 is: 423,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,035.10 : 612,052.65 = 282,063.90 : x
  2. Step 2: Convert to fraction form
    408,035.10/612,052.65 = 282,063.90/x
  3. Step 3: Cross multiply
    408,035.10x = 612,052.65 × 282,063.90
  4. Step 4: Simplify right side
    408,035.10x = 172,637,957,464.34
  5. Step 5: Solve for x
    x = 172,637,957,464.34/408,035.10
  6. Step 6: Final answer
    x = 423,095.85

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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.