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Finding the Fourth Proportional to 134,713.80, 202,289.40 and 75,664.80

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Solution

The fourth proportional to 134,713.80, 202,289.40 and 75,664.80 is: 113,620.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,713.80 : 202,289.40 = 75,664.80 : x
  2. Step 2: Convert to fraction form
    134,713.80/202,289.40 = 75,664.80/x
  3. Step 3: Cross multiply
    134,713.80x = 202,289.40 × 75,664.80
  4. Step 4: Simplify right side
    134,713.80x = 15,306,186,993.12
  5. Step 5: Solve for x
    x = 15,306,186,993.12/134,713.80
  6. Step 6: Final answer
    x = 113,620.04

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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.