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Finding the Fourth Proportional to 254,364.86, 351,027.90 and 139,654.15

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Solution

The fourth proportional to 254,364.86, 351,027.90 and 139,654.15 is: 192,725.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,364.86 : 351,027.90 = 139,654.15 : x
  2. Step 2: Convert to fraction form
    254,364.86/351,027.90 = 139,654.15/x
  3. Step 3: Cross multiply
    254,364.86x = 351,027.90 × 139,654.15
  4. Step 4: Simplify right side
    254,364.86x = 49,022,503,000.79
  5. Step 5: Solve for x
    x = 49,022,503,000.79/254,364.86
  6. Step 6: Final answer
    x = 192,725.14

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1.5x scale

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.