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Finding the Fourth Proportional to 442,853,438.80, 664,280,158.20 and 442,853,438.80

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Solution

The fourth proportional to 442,853,438.80, 664,280,158.20 and 442,853,438.80 is: 664,280,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,853,438.80 : 664,280,158.20 = 442,853,438.80 : x
  2. Step 2: Convert to fraction form
    442,853,438.80/664,280,158.20 = 442,853,438.80/x
  3. Step 3: Cross multiply
    442,853,438.80x = 664,280,158.20 × 442,853,438.80
  4. Step 4: Simplify right side
    442,853,438.80x = 294,178,752,385,478,016
  5. Step 5: Solve for x
    x = 294,178,752,385,478,016/442,853,438.80
  6. Step 6: Final answer
    x = 664,280,158.20

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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.