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Finding the Fourth Proportional to 55,431.93, 76,496.05 and 29,938.31

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Solution

The fourth proportional to 55,431.93, 76,496.05 and 29,938.31 is: 41,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,431.93 : 76,496.05 = 29,938.31 : x
  2. Step 2: Convert to fraction form
    55,431.93/76,496.05 = 29,938.31/x
  3. Step 3: Cross multiply
    55,431.93x = 76,496.05 × 29,938.31
  4. Step 4: Simplify right side
    55,431.93x = 2,290,162,458.68
  5. Step 5: Solve for x
    x = 2,290,162,458.68/55,431.93
  6. Step 6: Final answer
    x = 41,314.86

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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.