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Finding the Fourth Proportional to 253,819.98, 350,256.96 and 139,076.19

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Solution

The fourth proportional to 253,819.98, 350,256.96 and 139,076.19 is: 191,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,819.98 : 350,256.96 = 139,076.19 : x
  2. Step 2: Convert to fraction form
    253,819.98/350,256.96 = 139,076.19/x
  3. Step 3: Cross multiply
    253,819.98x = 350,256.96 × 139,076.19
  4. Step 4: Simplify right side
    253,819.98x = 48,712,403,517.78
  5. Step 5: Solve for x
    x = 48,712,403,517.78/253,819.98
  6. Step 6: Final answer
    x = 191,917.14

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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.