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Finding the Fourth Proportional to 442,617.20, 664,012.20 and 176,332.40

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Solution

The fourth proportional to 442,617.20, 664,012.20 and 176,332.40 is: 264,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,617.20 : 664,012.20 = 176,332.40 : x
  2. Step 2: Convert to fraction form
    442,617.20/664,012.20 = 176,332.40/x
  3. Step 3: Cross multiply
    442,617.20x = 664,012.20 × 176,332.40
  4. Step 4: Simplify right side
    442,617.20x = 117,086,864,855.28
  5. Step 5: Solve for x
    x = 117,086,864,855.28/442,617.20
  6. Step 6: Final answer
    x = 264,533.02

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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.