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Finding the Fourth Proportional to 408,065.45, 612,098.18 and 408,065.45

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Solution

The fourth proportional to 408,065.45, 612,098.18 and 408,065.45 is: 612,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,065.45 : 612,098.18 = 408,065.45 : x
  2. Step 2: Convert to fraction form
    408,065.45/612,098.18 = 408,065.45/x
  3. Step 3: Cross multiply
    408,065.45x = 612,098.18 × 408,065.45
  4. Step 4: Simplify right side
    408,065.45x = 249,776,119,265.88
  5. Step 5: Solve for x
    x = 249,776,119,265.88/408,065.45
  6. Step 6: Final answer
    x = 612,098.18

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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.