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Finding the Fourth Proportional to 437,135.54, 603,313.65 and 315,032.90

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Solution

The fourth proportional to 437,135.54, 603,313.65 and 315,032.90 is: 434,793.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,135.54 : 603,313.65 = 315,032.90 : x
  2. Step 2: Convert to fraction form
    437,135.54/603,313.65 = 315,032.90/x
  3. Step 3: Cross multiply
    437,135.54x = 603,313.65 × 315,032.90
  4. Step 4: Simplify right side
    437,135.54x = 190,063,648,769.09
  5. Step 5: Solve for x
    x = 190,063,648,769.09/437,135.54
  6. Step 6: Final answer
    x = 434,793.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.