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Finding the Fourth Proportional to 58,342.28, 80,621.34 and 47,728.04

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Solution

The fourth proportional to 58,342.28, 80,621.34 and 47,728.04 is: 65,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,342.28 : 80,621.34 = 47,728.04 : x
  2. Step 2: Convert to fraction form
    58,342.28/80,621.34 = 47,728.04/x
  3. Step 3: Cross multiply
    58,342.28x = 80,621.34 × 47,728.04
  4. Step 4: Simplify right side
    58,342.28x = 3,847,898,540.37
  5. Step 5: Solve for x
    x = 3,847,898,540.37/58,342.28
  6. Step 6: Final answer
    x = 65,953.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.