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Finding the Fourth Proportional to 446,665.20, 669,853.76 and 147,074.55

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Solution

The fourth proportional to 446,665.20, 669,853.76 and 147,074.55 is: 220,564.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,665.20 : 669,853.76 = 147,074.55 : x
  2. Step 2: Convert to fraction form
    446,665.20/669,853.76 = 147,074.55/x
  3. Step 3: Cross multiply
    446,665.20x = 669,853.76 × 147,074.55
  4. Step 4: Simplify right side
    446,665.20x = 98,518,439,582.44
  5. Step 5: Solve for x
    x = 98,518,439,582.44/446,665.20
  6. Step 6: Final answer
    x = 220,564.39

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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.