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Finding the Fourth Proportional to 403,752.20, 605,630.60 and 104,212.30

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Solution

The fourth proportional to 403,752.20, 605,630.60 and 104,212.30 is: 156,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,752.20 : 605,630.60 = 104,212.30 : x
  2. Step 2: Convert to fraction form
    403,752.20/605,630.60 = 104,212.30/x
  3. Step 3: Cross multiply
    403,752.20x = 605,630.60 × 104,212.30
  4. Step 4: Simplify right side
    403,752.20x = 63,114,157,776.38
  5. Step 5: Solve for x
    x = 63,114,157,776.38/403,752.20
  6. Step 6: Final answer
    x = 156,319.04

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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.