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Finding the Fourth Proportional to 365,445.96, 548,174.96 and 128,791.48

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Solution

The fourth proportional to 365,445.96, 548,174.96 and 128,791.48 is: 193,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,445.96 : 548,174.96 = 128,791.48 : x
  2. Step 2: Convert to fraction form
    365,445.96/548,174.96 = 128,791.48/x
  3. Step 3: Cross multiply
    365,445.96x = 548,174.96 × 128,791.48
  4. Step 4: Simplify right side
    365,445.96x = 70,600,264,397.34
  5. Step 5: Solve for x
    x = 70,600,264,397.34/365,445.96
  6. Step 6: Final answer
    x = 193,189.34

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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.