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Finding the Fourth Proportional to 53,914.70, 80,872.05 and 34,280.30

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Solution

The fourth proportional to 53,914.70, 80,872.05 and 34,280.30 is: 51,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,914.70 : 80,872.05 = 34,280.30 : x
  2. Step 2: Convert to fraction form
    53,914.70/80,872.05 = 34,280.30/x
  3. Step 3: Cross multiply
    53,914.70x = 80,872.05 × 34,280.30
  4. Step 4: Simplify right side
    53,914.70x = 2,772,318,135.62
  5. Step 5: Solve for x
    x = 2,772,318,135.62/53,914.70
  6. Step 6: Final answer
    x = 51,420.45

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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.