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Finding the Fourth Proportional to 587,177.25, 810,304.61 and 318,905.25

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Solution

The fourth proportional to 587,177.25, 810,304.61 and 318,905.25 is: 440,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,177.25 : 810,304.61 = 318,905.25 : x
  2. Step 2: Convert to fraction form
    587,177.25/810,304.61 = 318,905.25/x
  3. Step 3: Cross multiply
    587,177.25x = 810,304.61 × 318,905.25
  4. Step 4: Simplify right side
    587,177.25x = 258,410,392,633.68
  5. Step 5: Solve for x
    x = 258,410,392,633.68/587,177.25
  6. Step 6: Final answer
    x = 440,089.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.