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Finding the Fourth Proportional to 399,373.64, 598,860.14 and 133,040.52

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Solution

The fourth proportional to 399,373.64, 598,860.14 and 133,040.52 is: 199,494.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,373.64 : 598,860.14 = 133,040.52 : x
  2. Step 2: Convert to fraction form
    399,373.64/598,860.14 = 133,040.52/x
  3. Step 3: Cross multiply
    399,373.64x = 598,860.14 × 133,040.52
  4. Step 4: Simplify right side
    399,373.64x = 79,672,664,432.87
  5. Step 5: Solve for x
    x = 79,672,664,432.87/399,373.64
  6. Step 6: Final answer
    x = 199,494.05

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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.