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Finding the Fourth Proportional to 638,192.40, 956,251.80 and 401,110.80

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Solution

The fourth proportional to 638,192.40, 956,251.80 and 401,110.80 is: 601,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,192.40 : 956,251.80 = 401,110.80 : x
  2. Step 2: Convert to fraction form
    638,192.40/956,251.80 = 401,110.80/x
  3. Step 3: Cross multiply
    638,192.40x = 956,251.80 × 401,110.80
  4. Step 4: Simplify right side
    638,192.40x = 383,562,924,499.44
  5. Step 5: Solve for x
    x = 383,562,924,499.44/638,192.40
  6. Step 6: Final answer
    x = 601,014.56

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1.5x scale

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.