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Finding the Fourth Proportional to 153,896.96, 212,135.20 and 113,481.28

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Solution

The fourth proportional to 153,896.96, 212,135.20 and 113,481.28 is: 156,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,896.96 : 212,135.20 = 113,481.28 : x
  2. Step 2: Convert to fraction form
    153,896.96/212,135.20 = 113,481.28/x
  3. Step 3: Cross multiply
    153,896.96x = 212,135.20 × 113,481.28
  4. Step 4: Simplify right side
    153,896.96x = 24,073,374,029.06
  5. Step 5: Solve for x
    x = 24,073,374,029.06/153,896.96
  6. Step 6: Final answer
    x = 156,425.27

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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.