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Finding the Fourth Proportional to 355,254.30, 532,965.21 and 115,367.40

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Solution

The fourth proportional to 355,254.30, 532,965.21 and 115,367.40 is: 173,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,254.30 : 532,965.21 = 115,367.40 : x
  2. Step 2: Convert to fraction form
    355,254.30/532,965.21 = 115,367.40/x
  3. Step 3: Cross multiply
    355,254.30x = 532,965.21 × 115,367.40
  4. Step 4: Simplify right side
    355,254.30x = 61,486,810,568.15
  5. Step 5: Solve for x
    x = 61,486,810,568.15/355,254.30
  6. Step 6: Final answer
    x = 173,078.30

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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.