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Finding the Fourth Proportional to 476,716.80, 715,658.40 and 263,654.40

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Solution

The fourth proportional to 476,716.80, 715,658.40 and 263,654.40 is: 395,804.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,716.80 : 715,658.40 = 263,654.40 : x
  2. Step 2: Convert to fraction form
    476,716.80/715,658.40 = 263,654.40/x
  3. Step 3: Cross multiply
    476,716.80x = 715,658.40 × 263,654.40
  4. Step 4: Simplify right side
    476,716.80x = 188,686,486,056.96
  5. Step 5: Solve for x
    x = 188,686,486,056.96/476,716.80
  6. Step 6: Final answer
    x = 395,804.15

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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.