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Finding the Fourth Proportional to 90,700.56, 135,910.71 and 48,586.23

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Solution

The fourth proportional to 90,700.56, 135,910.71 and 48,586.23 is: 72,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,700.56 : 135,910.71 = 48,586.23 : x
  2. Step 2: Convert to fraction form
    90,700.56/135,910.71 = 48,586.23/x
  3. Step 3: Cross multiply
    90,700.56x = 135,910.71 × 48,586.23
  4. Step 4: Simplify right side
    90,700.56x = 6,603,389,015.52
  5. Step 5: Solve for x
    x = 6,603,389,015.52/90,700.56
  6. Step 6: Final answer
    x = 72,804.28

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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.