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Finding the Fourth Proportional to 45,817.65, 68,687.46 and 20,848.93

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Solution

The fourth proportional to 45,817.65, 68,687.46 and 20,848.93 is: 31,255.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,817.65 : 68,687.46 = 20,848.93 : x
  2. Step 2: Convert to fraction form
    45,817.65/68,687.46 = 20,848.93/x
  3. Step 3: Cross multiply
    45,817.65x = 68,687.46 × 20,848.93
  4. Step 4: Simplify right side
    45,817.65x = 1,432,059,873.70
  5. Step 5: Solve for x
    x = 1,432,059,873.70/45,817.65
  6. Step 6: Final answer
    x = 31,255.64

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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.