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Finding the Fourth Proportional to 53,892.20, 80,838.30 and 47,331.20

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Solution

The fourth proportional to 53,892.20, 80,838.30 and 47,331.20 is: 70,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,892.20 : 80,838.30 = 47,331.20 : x
  2. Step 2: Convert to fraction form
    53,892.20/80,838.30 = 47,331.20/x
  3. Step 3: Cross multiply
    53,892.20x = 80,838.30 × 47,331.20
  4. Step 4: Simplify right side
    53,892.20x = 3,826,173,744.96
  5. Step 5: Solve for x
    x = 3,826,173,744.96/53,892.20
  6. Step 6: Final answer
    x = 70,996.80

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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.