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Finding the Fourth Proportional to 416,391.90, 624,494.34 and 191,536.38

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Solution

The fourth proportional to 416,391.90, 624,494.34 and 191,536.38 is: 287,261.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,391.90 : 624,494.34 = 191,536.38 : x
  2. Step 2: Convert to fraction form
    416,391.90/624,494.34 = 191,536.38/x
  3. Step 3: Cross multiply
    416,391.90x = 624,494.34 × 191,536.38
  4. Step 4: Simplify right side
    416,391.90x = 119,613,385,214.09
  5. Step 5: Solve for x
    x = 119,613,385,214.09/416,391.90
  6. Step 6: Final answer
    x = 287,261.56

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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.