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Finding the Fourth Proportional to 68,672.80, 103,009.20 and 33,594.40

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Solution

The fourth proportional to 68,672.80, 103,009.20 and 33,594.40 is: 50,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,672.80 : 103,009.20 = 33,594.40 : x
  2. Step 2: Convert to fraction form
    68,672.80/103,009.20 = 33,594.40/x
  3. Step 3: Cross multiply
    68,672.80x = 103,009.20 × 33,594.40
  4. Step 4: Simplify right side
    68,672.80x = 3,460,532,268.48
  5. Step 5: Solve for x
    x = 3,460,532,268.48/68,672.80
  6. Step 6: Final answer
    x = 50,391.60

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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.