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Finding the Fourth Proportional to 587,540.84, 810,818.34 and 319,286.12

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Solution

The fourth proportional to 587,540.84, 810,818.34 and 319,286.12 is: 440,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,540.84 : 810,818.34 = 319,286.12 : x
  2. Step 2: Convert to fraction form
    587,540.84/810,818.34 = 319,286.12/x
  3. Step 3: Cross multiply
    587,540.84x = 810,818.34 × 319,286.12
  4. Step 4: Simplify right side
    587,540.84x = 258,883,041,803.44
  5. Step 5: Solve for x
    x = 258,883,041,803.44/587,540.84
  6. Step 6: Final answer
    x = 440,621.36

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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.