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Finding the Fourth Proportional to 402,423.12, 603,692.64 and 121,962.24

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Solution

The fourth proportional to 402,423.12, 603,692.64 and 121,962.24 is: 182,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,423.12 : 603,692.64 = 121,962.24 : x
  2. Step 2: Convert to fraction form
    402,423.12/603,692.64 = 121,962.24/x
  3. Step 3: Cross multiply
    402,423.12x = 603,692.64 × 121,962.24
  4. Step 4: Simplify right side
    402,423.12x = 73,627,706,645.91
  5. Step 5: Solve for x
    x = 73,627,706,645.91/402,423.12
  6. Step 6: Final answer
    x = 182,960.93

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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.