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Finding the Fourth Proportional to 417,692.40, 625,847.40 and 355,484.40

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Solution

The fourth proportional to 417,692.40, 625,847.40 and 355,484.40 is: 532,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,692.40 : 625,847.40 = 355,484.40 : x
  2. Step 2: Convert to fraction form
    417,692.40/625,847.40 = 355,484.40/x
  3. Step 3: Cross multiply
    417,692.40x = 625,847.40 × 355,484.40
  4. Step 4: Simplify right side
    417,692.40x = 222,478,987,480.56
  5. Step 5: Solve for x
    x = 222,478,987,480.56/417,692.40
  6. Step 6: Final answer
    x = 532,638.34

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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.