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Finding the Fourth Proportional to 60,472.72, 90,717.29 and 21,024.73

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Solution

The fourth proportional to 60,472.72, 90,717.29 and 21,024.73 is: 31,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,472.72 : 90,717.29 = 21,024.73 : x
  2. Step 2: Convert to fraction form
    60,472.72/90,717.29 = 21,024.73/x
  3. Step 3: Cross multiply
    60,472.72x = 90,717.29 × 21,024.73
  4. Step 4: Simplify right side
    60,472.72x = 1,907,305,969.87
  5. Step 5: Solve for x
    x = 1,907,305,969.87/60,472.72
  6. Step 6: Final answer
    x = 31,539.94

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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.