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Finding the Fourth Proportional to 65,611.57, 90,544.34 and 36,931.80

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Solution

The fourth proportional to 65,611.57, 90,544.34 and 36,931.80 is: 50,966.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,611.57 : 90,544.34 = 36,931.80 : x
  2. Step 2: Convert to fraction form
    65,611.57/90,544.34 = 36,931.80/x
  3. Step 3: Cross multiply
    65,611.57x = 90,544.34 × 36,931.80
  4. Step 4: Simplify right side
    65,611.57x = 3,343,965,456.01
  5. Step 5: Solve for x
    x = 3,343,965,456.01/65,611.57
  6. Step 6: Final answer
    x = 50,966.09

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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.