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Finding the Fourth Proportional to 61,226.80, 91,840.20 and 53,450.80

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Solution

The fourth proportional to 61,226.80, 91,840.20 and 53,450.80 is: 80,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,226.80 : 91,840.20 = 53,450.80 : x
  2. Step 2: Convert to fraction form
    61,226.80/91,840.20 = 53,450.80/x
  3. Step 3: Cross multiply
    61,226.80x = 91,840.20 × 53,450.80
  4. Step 4: Simplify right side
    61,226.80x = 4,908,932,162.16
  5. Step 5: Solve for x
    x = 4,908,932,162.16/61,226.80
  6. Step 6: Final answer
    x = 80,176.20

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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.