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Finding the Fourth Proportional to 54,998.97, 75,899.72 and 31,125.64

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Solution

The fourth proportional to 54,998.97, 75,899.72 and 31,125.64 is: 42,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,998.97 : 75,899.72 = 31,125.64 : x
  2. Step 2: Convert to fraction form
    54,998.97/75,899.72 = 31,125.64/x
  3. Step 3: Cross multiply
    54,998.97x = 75,899.72 × 31,125.64
  4. Step 4: Simplify right side
    54,998.97x = 2,362,427,360.82
  5. Step 5: Solve for x
    x = 2,362,427,360.82/54,998.97
  6. Step 6: Final answer
    x = 42,954.03

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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.