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Finding the Fourth Proportional to 57,892.20, 86,708.70 and 56,596.20

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Solution

The fourth proportional to 57,892.20, 86,708.70 and 56,596.20 is: 84,767.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,892.20 : 86,708.70 = 56,596.20 : x
  2. Step 2: Convert to fraction form
    57,892.20/86,708.70 = 56,596.20/x
  3. Step 3: Cross multiply
    57,892.20x = 86,708.70 × 56,596.20
  4. Step 4: Simplify right side
    57,892.20x = 4,907,382,926.94
  5. Step 5: Solve for x
    x = 4,907,382,926.94/57,892.20
  6. Step 6: Final answer
    x = 84,767.60

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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.