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Finding the Fourth Proportional to 38,606.84, 57,921.22 and 19,900.58

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Solution

The fourth proportional to 38,606.84, 57,921.22 and 19,900.58 is: 29,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,606.84 : 57,921.22 = 19,900.58 : x
  2. Step 2: Convert to fraction form
    38,606.84/57,921.22 = 19,900.58/x
  3. Step 3: Cross multiply
    38,606.84x = 57,921.22 × 19,900.58
  4. Step 4: Simplify right side
    38,606.84x = 1,152,665,872.31
  5. Step 5: Solve for x
    x = 1,152,665,872.31/38,606.84
  6. Step 6: Final answer
    x = 29,856.52

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1.5x scale

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.