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Finding the Fourth Proportional to 355,144.40, 532,692.30 and 115,254.80

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Solution

The fourth proportional to 355,144.40, 532,692.30 and 115,254.80 is: 172,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,144.40 : 532,692.30 = 115,254.80 : x
  2. Step 2: Convert to fraction form
    355,144.40/532,692.30 = 115,254.80/x
  3. Step 3: Cross multiply
    355,144.40x = 532,692.30 × 115,254.80
  4. Step 4: Simplify right side
    355,144.40x = 61,395,344,498.04
  5. Step 5: Solve for x
    x = 61,395,344,498.04/355,144.40
  6. Step 6: Final answer
    x = 172,874.31

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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.