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Finding the Fourth Proportional to 39,570.64, 59,361.84 and 11,490.94

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Solution

The fourth proportional to 39,570.64, 59,361.84 and 11,490.94 is: 17,238.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,570.64 : 59,361.84 = 11,490.94 : x
  2. Step 2: Convert to fraction form
    39,570.64/59,361.84 = 11,490.94/x
  3. Step 3: Cross multiply
    39,570.64x = 59,361.84 × 11,490.94
  4. Step 4: Simplify right side
    39,570.64x = 682,123,341.73
  5. Step 5: Solve for x
    x = 682,123,341.73/39,570.64
  6. Step 6: Final answer
    x = 17,238.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.