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Finding the Fourth Proportional to 355,170.57, 532,698.35 and 130,475.76

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Solution

The fourth proportional to 355,170.57, 532,698.35 and 130,475.76 is: 195,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,170.57 : 532,698.35 = 130,475.76 : x
  2. Step 2: Convert to fraction form
    355,170.57/532,698.35 = 130,475.76/x
  3. Step 3: Cross multiply
    355,170.57x = 532,698.35 × 130,475.76
  4. Step 4: Simplify right side
    355,170.57x = 69,504,221,414.62
  5. Step 5: Solve for x
    x = 69,504,221,414.62/355,170.57
  6. Step 6: Final answer
    x = 195,692.51

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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.