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Finding the Fourth Proportional to 40,902.60, 61,353.90 and 14,608.20

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Solution

The fourth proportional to 40,902.60, 61,353.90 and 14,608.20 is: 21,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,902.60 : 61,353.90 = 14,608.20 : x
  2. Step 2: Convert to fraction form
    40,902.60/61,353.90 = 14,608.20/x
  3. Step 3: Cross multiply
    40,902.60x = 61,353.90 × 14,608.20
  4. Step 4: Simplify right side
    40,902.60x = 896,270,041.98
  5. Step 5: Solve for x
    x = 896,270,041.98/40,902.60
  6. Step 6: Final answer
    x = 21,912.30

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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.