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Finding the Fourth Proportional to 38,366.70, 57,512.85 and 19,655.56

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Solution

The fourth proportional to 38,366.70, 57,512.85 and 19,655.56 is: 29,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,366.70 : 57,512.85 = 19,655.56 : x
  2. Step 2: Convert to fraction form
    38,366.70/57,512.85 = 19,655.56/x
  3. Step 3: Cross multiply
    38,366.70x = 57,512.85 × 19,655.56
  4. Step 4: Simplify right side
    38,366.70x = 1,130,447,273.95
  5. Step 5: Solve for x
    x = 1,130,447,273.95/38,366.70
  6. Step 6: Final answer
    x = 29,464.28

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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.