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Finding the Fourth Proportional to 65,887.40, 90,923.52 and 35,672.48

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Solution

The fourth proportional to 65,887.40, 90,923.52 and 35,672.48 is: 49,227.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,887.40 : 90,923.52 = 35,672.48 : x
  2. Step 2: Convert to fraction form
    65,887.40/90,923.52 = 35,672.48/x
  3. Step 3: Cross multiply
    65,887.40x = 90,923.52 × 35,672.48
  4. Step 4: Simplify right side
    65,887.40x = 3,243,467,448.73
  5. Step 5: Solve for x
    x = 3,243,467,448.73/65,887.40
  6. Step 6: Final answer
    x = 49,227.43

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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.