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Finding the Fourth Proportional to 64,422.80, 96,586.20 and 33,280.40

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Solution

The fourth proportional to 64,422.80, 96,586.20 and 33,280.40 is: 49,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,422.80 : 96,586.20 = 33,280.40 : x
  2. Step 2: Convert to fraction form
    64,422.80/96,586.20 = 33,280.40/x
  3. Step 3: Cross multiply
    64,422.80x = 96,586.20 × 33,280.40
  4. Step 4: Simplify right side
    64,422.80x = 3,214,427,370.48
  5. Step 5: Solve for x
    x = 3,214,427,370.48/64,422.80
  6. Step 6: Final answer
    x = 49,895.80

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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.